Chlamydia smear test: which test to take, how the sample is collected, and what the results show

A chlamydia smear is a collection of cells and secretions from the mucous membrane for subsequent laboratory testing of the Chlamydia trachomatis bacteria. Samples can be taken from the vagina, cervix, urethra, rectum, oropharynx, or conjunctiva of the eye—the choice depends on the individual's anatomy, symptoms, and type of sexual contact. [1]

The word "smear" itself describes only the method of obtaining the sample, not the testing method. Modern qualitative analysis is typically based on a nucleic acid amplification test, which multiplies the amount of a specific region of the pathogen's genetic material, thereby detecting even small amounts of bacteria. [2]

Polymerase chain reaction is one of the technologies for amplifying nucleic acids, but it is not the only one. Laboratories may also use transcription-mediated amplification and other molecular methods, so the term "polymerase chain reaction swab" does not always fully describe the test system used. [3]

Routine microscopy of a vaginal smear does not reliably confirm or rule out chlamydia. White blood cells and signs of inflammation can be seen under a microscope, but Chlamydia trachomatis replicates within cells and is not detected in the same way as many common vaginal or urethral bacteria. [4]

The World Health Organization considers nucleic acid amplification tests the primary modern method for diagnosing chlamydia. The test can be performed on swabs from various sites or on urine, but proper sample selection is crucial: the test reveals the condition of the specific area from which the sample was collected. [5]

Term	What does it mean?	Can chlamydia be confirmed?
Smear	Method for obtaining material from mucous membrane	Depends on the subsequent method
Smear for flora	Microscopic examination of microorganisms and cells	No, it neither reliably excludes nor confirms
Nucleic acid amplification test	Molecular detection of genetic material	Yes, the main modern method
Polymerase chain reaction	One of the variants of molecular amplification	Yes, if the test is validated
Sowing	Growing the pathogen in the laboratory	It is rarely used for routine diagnosis of chlamydia.
Serological blood test	Antibody search	Does not replace a smear in uncomplicated urogenital infections

Why is a molecular smear considered preferable?

Nucleic acid amplification tests are more sensitive than culture and older non-molecular methods. They detect specific regions of deoxyribonucleic acid or ribonucleic acid in Chlamydia trachomatis and do not require viable bacteria in the sample. [6]

High sensitivity allows for the examination of material collected using relatively simple and minimally invasive methods. For example, a woman often only needs to take a vaginal swab, and a man only needs to provide a first urine sample, although certain symptoms may require a urethral swab. [7]

The European 2025 guidelines recommend using only validated nucleic acid amplification tests for diagnosis. A validated test is defined as a test whose performance has been confirmed for a specific sample type, equipment, and laboratory process. [8]

Even a highly accurate molecular test is not completely infallible. A false negative result can occur due to improper sampling, testing the wrong anatomical area, testing too early, or the presence of substances that interfere with the reaction; a false positive result can be due to contamination of the sample or laboratory environment. [9]

Therefore, the quality of the result is determined not only by the method's name. The appropriate swab, adherence to the kit instructions, proper transportation, laboratory quality control, and clinical interpretation of the result, taking into account contacts, symptoms, and recent antibiotic use, are all important. [10]

Characteristics of the method	Practical significance
High sensitivity	Allows detection of small amounts of pathogen material
High specificity	The test targets specific regions of the genome
Does not require live bacteria	Easier to transport than crops
Suitable for self-pickup	Increases accessibility of examination
Depends on the type of sample	One test does not automatically check all anatomical areas
Requires quality control	Sampling errors and contamination may distort the results.

What types of smears are used?

A vaginal swab is considered the preferred urogenital specimen for most women. It is collected from the inner surface of the vagina and is suitable for both symptomatic patients and asymptomatic women. [11]

A cervical smear is obtained from the cervical canal during a gynecological examination using a speculum. This sample remains acceptable, especially if the examination is necessary due to discharge, bleeding, pelvic pain, or other symptoms. [12]

A urethral swab is taken from the urethra. In men, it is more often used in cases of discharge, severe urethritis, or the need to obtain material for additional testing, since for routine asymptomatic screening, the first portion of urine is usually more convenient and comparable in information content. [13]

A rectal swab is used to examine the rectum. It is prescribed after receptive anal intercourse, in cases of rectal pain, discharge, or bleeding, and as part of routine screening for certain high-risk groups. [14]

A pharyngeal swab is taken from the oropharynx after oral contact when indicated. Oropharyngeal chlamydia is less common and usually asymptomatic, but if detected, the infection is treated. [15]

Sample type	What zone does it check?	When it is especially useful
Vaginal smear	Vaginal and urogenital infection in women	Preferred screening option
Cervical smear	Cervical canal	During a gynecological examination
Urethral smear	Urethra	For discharge and signs of urethritis
Rectal smear	Rectum	After anal intercourse or with rectal symptoms
Pharyngeal smear	Oropharynx	After oral contact as indicated
Conjunctival smear	Mucous membrane of the eye	If chlamydial conjunctivitis is suspected

Chlamydia smear test in women

For a woman, the most informative and convenient urogenital sample is usually a vaginal swab. The US Centers for Disease Control and Prevention calls it the optimal sample type for molecular screening of women. [16]

A vaginal smear can be taken without a full gynecological examination. The swab is inserted into the vagina to the depth specified in the instructions for the specific kit, rotated several times or held for the required time, and then placed in a transport tube. [17]

A self-collected vaginal swab, when used with a validated test, is comparable in sensitivity and specificity to a sample collected by a healthcare professional. Therefore, self-collection should not be considered inferior simply because the patient performs the procedure themselves. [18]

A 2023 meta-analysis found that vaginal swabs detect chlamydial infection in women slightly more often than urine samples. In the pooled data, sensitivity was approximately 94.1% for vaginal swabs and 86.9% for urine, although specific test performance may vary. [19]

Pregnancy is not a contraindication for a properly performed vaginal smear. If necessary, the doctor may also take a cervical sample, but the choice should take into account the symptoms, the gestational age, the test kit used, and the need for a gynecological examination. [20]

A woman's option	Advantages	Restrictions
Self-administered vaginal smear	Accurate, confidential, no inspection required	You must strictly follow the instructions.
A smear taken by a doctor	Can be combined with symptom assessment	Requires a visit to the clinic
Cervical smear	Convenient during gynecological examinations	Requires insertion of a speculum
First portion of urine	Non-invasive method	May detect fewer infections than a vaginal smear
Smear test during pregnancy	Generally safe	The tactics are determined by the obstetrician-gynecologist
Smear during menstruation	Available in a number of services	It is better to check the rules of a specific laboratory.

Chlamydia smear test in men

In men, the preferred specimen for detecting uncomplicated urethral infection is often the first urine sample rather than a swab. This option is effective in detecting material flushed from the initial section of the urethra and is usually more easily tolerated. [21]

A urethral swab remains important in cases of severe symptoms. It may be taken if there is discharge from the urethra, burning, signs of inflammation, the need for microscopy, or simultaneous testing for other causes of urethritis. [22]

During the procedure, a thin swab is carefully inserted into the external opening of the urethra to the depth specified by the kit, briefly rotated, and removed. The procedure takes a few seconds but may cause a temporary burning sensation or discomfort. [23]

For some men, a self-collected urethral swab may be used. Research shows that, with a validated molecular assay, its results can be comparable to those of a first-aid urine sample or a swab collected by a healthcare professional. [24]

For men with scrotal pain or swelling, a urethral swab alone is not sufficient. An examination is necessary to rule out epididymitis and testicular torsion, and treatment for suspected complications may begin before definitive laboratory results are available. [25]

The man's situation	Preferred material or action
Preventive urogenital test	First portion of urine
Discharge from the urethra	First urine sample and sometimes urethral smear
Severe urethritis	Examination, molecular analysis and additional research
Inability to provide urine	A smear from the external opening of the urethra is possible
Anal intercourse	A separate rectal swab
Oral contact	Pharyngeal smear according to indications
Pain in the scrotum	Urgent medical assessment, not just a smear

Rectal swab and throat swab

Rectal and oropharyngeal infections are not reliably detected by vaginal swabs, cervical samples, or urine. If infection may have occurred through anal or oral contact, the affected area should be examined separately. [26]

A rectal swab is taken from the inside of the rectum. Patients can often perform a self-collection after the procedure is explained; with proper instruction, self-collected rectal samples are suitable for molecular testing. [27]

Rectal testing is especially important in cases of pain, mucous or purulent discharge, bleeding, painful bowel movements, or after receptive anal intercourse. In cases of severe proctitis, a positive smear is sometimes referred for further testing to rule out lymphogranuloma venereum. [28]

A throat swab is taken from the back of the throat and tonsil area. Oropharyngeal chlamydial infection is usually asymptomatic and less common than rectal or urogenital infection, so general throat testing for chlamydia is not usually performed. [29]

Some laboratory systems simultaneously test a single pharyngeal or rectal swab for Chlamydia trachomatis and gonorrhea. It is important to ensure that the assay used is validated for a specific anatomical site, and not just urine or genital specimens. [30]

Zone	When to take a smear	What this analysis does not replace
Rectum	Anal intercourse or rectal symptoms	Urine and vaginal smear
Oropharynx	Oral contact when indicated	Urogenital analysis
The rectum in a woman	By the nature of contacts and clinical decision	Cervical smear only
Oropharynx without symptoms	Necessity is assessed by risk	No sore throat
Severe proctitis	An extended analysis is needed	A simple short regimen without a doctor's assessment
Multiple contact zones	Every significant area is explored	One universal smear

How to prepare for a smear test

There is no single preparation method suitable for all test systems and sample types. The European 2025 Guidelines emphasize that the manufacturer's instructions for the specific kit must be followed when collecting, transporting, and storing the material. [31]

If a man is scheduled for urine or urethral sampling, many laboratories require that he abstain from urination for at least 1 hour before the sample is collected. Some clinics specify an interval of up to 2 hours, so please follow the guidelines of your chosen laboratory. [32]

Vaginal self-sampling typically does not require douching or special washing. Conversely, you should not use antiseptics on your vagina immediately before the test, as the laboratory kit is designed for natural mucosal material. It is best to clarify any specific restrictions in advance. [33]

It is important to inform your physician or laboratory about recent antibiotic use and the use of vaginal suppositories, creams, or other topical medications. This information is important for timing the test and interpreting a negative result. [34]

A smear can be taken during menstruation, but the rules vary between clinics. Some clinics recommend waiting until bleeding has slowed or stopped, especially if the flow is heavy, so it's best to check the laboratory's instructions rather than canceling the necessary test on your own. [35]

Before analysis	Practical recommendation
Urination	During a urethral analysis, do not urinate frequently for at least 1 hour.
Intimate hygiene	Normal external hygiene without aggressive products
Douching	Do not carry out without a doctor's prescription
Vaginal preparations	Report use to a doctor
Antibiotics	Provide the name and date of the last dose.
Menstruation	Clarify laboratory rules
Pregnancy	Be sure to inform your healthcare professional

How is a smear taken and is it painful?

A self-administered vaginal swab typically takes less than a minute. The swab is inserted into the vagina according to the instructions, rotated several times, carefully removed, and placed in the transport tube, without touching the working part with your hands or other surfaces. [36]

During a cervical collection, the doctor inserts a speculum into the vagina to visualize the cervix and then passes a special swab through the cervical canal. Brief discomfort and slight contact bleeding are possible, especially if the cervix is inflamed. [37]

A urethral swab may be uncomfortable and cause a brief burning sensation in men, as the swab comes into contact with the sensitive lining of the urethra. The pain is usually brief, and the collection itself takes only a few seconds. [38]

Rectal self-sampling is generally well-tolerated: a swab is inserted shallowly into the rectum and gently rotated. In cases of severe pain, bleeding, or ulcers, it is best to have a healthcare professional collect the sample at the same time as the examination. [39]

A throat swab may cause a gag reflex but is usually painless. If the procedure is accompanied by severe pain, significant bleeding, or worsening of the condition, a healthcare provider should be notified – this is not considered an expected outcome of a routine screening test. [40]

Procedure	Ordinary sensations	Duration
Self-collection of a vaginal smear	Pressure or mild discomfort	Several tens of seconds
Cervical smear	Discomfort from the mirror, possible brief tingling	A few minutes of inspection
Urethral smear	Short-term burning sensation	A few seconds
Rectal smear	Pressure, moderate discomfort	A few seconds
Pharyngeal smear	Gag reflex	A few seconds
Conjunctival smear	Eye irritation	A few seconds

When to get a swab test after contact

The incubation period, or the time before symptoms appear, and the diagnostic window for testing are different concepts. Chlamydia often causes no symptoms at all, and a molecular test may become positive before symptoms appear. [41]

There is insufficient data on the earliest time for reliable detection after infection. The European 2025 guidelines indicate that a positive result can sometimes be observed within 1-3 days, but a negative test after very recent exposure is not always considered definitive. [42]

If possible exposure occurred within the last two weeks, European guidelines recommend testing upon presentation and, if risk persists, repeating the test two weeks after exposure. This reduces the likelihood of missing an early infection. [43]

If you experience discharge, burning during urination, lower abdominal pain, scrotal pain, or rectal symptoms, you should seek medical attention immediately, without waiting for the diagnostic window to end. Your doctor can simultaneously conduct testing and begin treatment for any suspected complications. [44]

If a partner has received a confirmed diagnosis, one should not simply wait for symptoms to appear. Partners within the previous 60 days require medical evaluation, testing, and usually appropriate treatment based on the clinical situation. [45]

Time or situation	What to do
The contact occurred several days ago.	You can apply immediately, but a negative result may require a repeat.
Less than 2 weeks have passed	Test upon presentation and consider repeating in 2 weeks
2 weeks or more have passed	Molecular analysis is usually more informative
Symptoms appeared	Get examined immediately
The partner received a positive result.	Contact us without waiting for symptoms
The risk continues	The period is counted from the last contact

What do positive, negative, and inconclusive results mean?

A positive molecular result means that genetic material from Chlamydia trachomatis was detected in the sample tested. This confirms infection in a specific anatomical area and is the basis for treatment and management of sexual partners. [46]

A positive smear test does not indicate when the infection occurred, how long the infection has been present, or who exactly caused it. Because chlamydia is often asymptomatic, it may not be detected until a significant period after infection. [47]

A negative result means that no detectable amount of the pathogen's genetic material was detected in the sample. This is most conclusive if the correct site was selected, the collection technique was followed, and the test was performed not too soon after exposure. [48]

A negative vaginal or urethral swab does not rule out rectal or oropharyngeal chlamydia. Similarly, a negative pharyngeal test does not allow conclusions about the condition of the genitourinary system. [49]

An inconclusive, invalid, or non-informative result means the laboratory was unable to reliably confirm or exclude infection. This may be due to insufficient sample volume, transportation issues, inhibition of the molecular reaction, or a technical issue; a new sample is usually required. [50]

Result	What does it mean?	The next step
Positive	Chlamydia trachomatis material detected	Treatment and assessment of partners
Negative	The pathogen was not found in this sample.	Take into account the timeframe and the area explored
Invalid	The test did not yield an interpretable answer.	Repeat the fence
Doubtful	The result is close to the threshold or requires verification	Follow the laboratory's conclusion
Negative after very recent contact	The infection may not yet be detected.	Consider a repeat test
Positive soon after treatment	There may be remnants of non-viable bacteria	Assess the timing and indications for monitoring

Smear after treatment and during pregnancy

In non-pregnant patients, a follow-up smear to confirm cure is usually not required if the antibiotic has been taken correctly, symptoms have resolved, and there is no suspicion of reinfection. However, there are clinical exceptions to this rule. [51]

Nucleic acid amplification testing is not recommended for use within 4 weeks of completion of treatment unless specifically indicated. This method can detect residual genetic material from dead bacteria and yield a positive result in the absence of active infection. [52]

A follow-up test approximately 3 months after treatment is recommended for most people. Its purpose is not to confirm the effectiveness of the antibiotic, but to detect reinfection, which is most often associated with an untreated or newly infected partner. [53]

Pregnant women should undergo a cure check approximately 4 weeks after treatment. Additionally, repeat testing is performed within 3 months, and if the risk continues, again in the third trimester or closer to delivery. [54]

If discharge, burning, pelvic pain, scrotal pain, or rectal symptoms persist after treatment, do not wait for the scheduled three-month test. You should consult your doctor again to rule out non-compliance with the regimen, reinfection, gonorrhea, another pathogen, or complications. [55]

Situation after treatment	Recommendation
A non-pregnant patient without symptoms	Cure monitoring is usually not necessary.
Analysis before 4 weeks	A false positive result is possible
Pregnancy	Check for cure after approximately 4 weeks
All patients after treatment	Repeat test in approximately 3 months
Symptoms persist	Contact earlier
There was a new contact	Assess the risk of re-infection
The partner was not treated	High probability of reinfection

Home self-collection and rapid tests

A home test can involve two different procedures. With a self-collection test, a person takes a swab at home and sends it to a lab where professional molecular analysis is performed; with a true self-test, the reaction is performed on a home device and the result is obtained without sending the sample. [56]

Vaginal, rectal, and pharyngeal swabs can be used for laboratory self-collection if the kit and laboratory have validated the appropriate specimen type. This format can improve accessibility of testing, especially for asymptomatic individuals. [57]

As of March 2026, the U.S. Centers for Disease Control and Prevention reports the availability of a self-test for gonorrhea, chlamydia, and trichomoniasis that uses a vaginal swab and is approved in the United States. Availability and approved uses of such devices vary by country.[58]

The stated accuracy of one kit cannot be automatically transferred to another. Before purchasing, it is important to check the official registration of the device, the acceptable sample type, the expiration date after exposure, storage instructions, and the procedure for dealing with a positive or invalid result. [59]

Home testing does not replace medical care for pelvic pain, pregnancy, scrotal pain, rectal bleeding, or severe symptoms. Furthermore, a stand-alone home test for chlamydia does not automatically screen for syphilis, human immunodeficiency virus, and other infections. [60]

Home examination option	Where is the analysis carried out?	Peculiarities
Home pickup with delivery	In a professional laboratory	Molecular method is often used
A real self-test	On a home device	The result is obtained independently
Vaginal self-collection	At home or in the clinic	Well studied
Rectal self-collection	At home or in the clinic with a validated kit	Checks only the rectum
Pharyngeal self-collection	If you have a suitable set	Does not replace a urogenital test
Positive home result	Requires treatment and partnership tactics	Follow the instructions and consult a doctor.

Common mistakes when taking a smear test

The first mistake is ordering a "routine smear" and assuming that it automatically includes chlamydia. The referral should specify a molecular test for Chlamydia trachomatis, as microscopy of the flora is not a test for this pathogen. [61]

The second mistake is testing only one area after several types of sexual contact. For example, a negative urine test does not rule out a rectal infection after receptive anal sex, and a vaginal swab does not test the oropharynx. [62]

The third mistake is choosing urine from a woman simply because it seems easier. Urine remains an acceptable sample, but a vaginal swab is generally more sensitive and therefore preferable when given a choice. [63]

The fourth mistake is taking a test immediately after treatment and declaring the therapy ineffective if the result is positive. The genetic material of non-viable bacteria can take several weeks to be detected, so the monitoring period is determined based on clinical guidelines. [64]

The fifth mistake is to consider a negative result as proof of the absence of all sexually transmitted infections. A smear test for chlamydia does not rule out gonorrhea, syphilis, human immunodeficiency virus, genital herpes, and other diseases if they were not included in the prescribed panel. [65]

Error	Possible consequence	The right approach
A regular smear instead of molecular analysis	Chlamydia will remain undetected	Clarify the research method
Checking one zone	Missing a sexually transmitted infection	Test contact zones
Urine instead of a vaginal smear in a woman	Decreased sensitivity	Prefer vaginal sample
Testing too early after exposure	False negative response	Repeat within the recommended time frame
Too early control after treatment	False positive response	Do not test before 4 weeks unless indicated.
Ignoring partners	Reinfection	Organize partner treatment

FAQ

Which chlamydia smear test is considered the most accurate?
The preferred method is a validated nucleic acid amplification test. For women, a vaginal swab is generally considered the optimal urogenital specimen, and for men, a first-pass urine sample is the optimal specimen, although a urethral swab may be used if symptoms are present. [66]

Can chlamydia be detected with a standard swab?
No. Microscopy can show inflammation, but is not diagnostically accurate enough to confirm or exclude Chlamydia trachomatis. [67]

Which is better for a woman: a vaginal swab or urine?
A vaginal swab is generally preferred. A meta-analysis showed higher sensitivity for vaginal samples compared to urine, although urine remains an acceptable option when a swab is not possible or acceptable. [68]

Can I take a vaginal swab myself?
Yes. When using the appropriate molecular kit, a self-collected vaginal swab is comparable in accuracy to a swab taken by a healthcare professional. [69]

Should the tampon be inserted deeply when self-collecting?
The depth and duration of rotation depend on the specific kit. Follow the included instructions carefully and do not use generic instructions found online instead of the manufacturer's recommendations. [70]

Is it painful to take a urethral swab from a man?
The procedure can be uncomfortable and cause a brief burning sensation, but usually lasts a few seconds. If severe pain or injury occurs, notify a healthcare professional. [71]

Can I provide urine instead of a urethral swab?
In most cases, the first portion of urine is sufficient for molecular diagnostics in men. A urethral swab is often needed for symptoms or additional testing. [72]

Do I need to wash myself before the smear test?
No special douching or antiseptic treatment of the vagina is required. Regular external hygiene and the specific laboratory's requirements should be followed. [73]

Can I have a Pap smear test during my period?
Many clinics offer this test, but if I'm bleeding heavily, the lab may recommend a later date. It's best to check the requirements of the location where the test will be performed in advance. [74]

Can a vaginal smear be performed during pregnancy?
Yes. A properly performed vaginal smear is generally safe during pregnancy and does not affect the fetus. A positive result requires treatment under the supervision of an obstetrician-gynecologist. [75]

How soon after sex should I have a smear test?
If my partner has symptoms or a confirmed diagnosis, I should seek medical attention immediately. If contact occurred less than two weeks ago and an earlier test is negative, European guidelines recommend considering a repeat test two weeks after contact. [76]

Is a rectal swab necessary after anal sex?
Yes, if the person was the receptive partner or has rectal symptoms. A urogenital test does not reliably rule out a rectal infection. [77]

Is a throat swab necessary after oral sex?
The need for a throat swab is determined by the nature of the exposure, the risk, and local recommendations. Oropharyngeal chlamydia is less common and often asymptomatic, but if detected, the infection is treated. [78]

Can a positive smear test reveal the date of infection?
No. The test confirms the presence of the pathogen's genetic material in the area examined, but does not determine the time of infection or the specific partner/source. [79]

Why might a swab be negative despite symptoms?
It could be that the test was taken too early, the sample was taken from the wrong area, there wasn't enough sample, or a recent antibiotic or other pathogen, such as gonorrhea or Mycoplasma genitalium. [80]

Should a positive result be confirmed with a second smear?
Routinely repeating each positive molecular test does not generally improve diagnostic yield. Repeat testing may be necessary in the case of an invalid result, a questionable clinical situation, or according to specific laboratory guidelines. [81]

When should I have a swab test after treatment?
Non-pregnant women do not usually need a test of cure. If indicated, molecular testing should not be performed before 4 weeks; regardless, repeat testing is recommended after approximately 3 months to detect reinfection. [82]

What other tests are needed if the smear is positive?
Testing for gonorrhea, syphilis, and human immunodeficiency virus is recommended. Additional tests are selected based on symptoms and sexual contacts. [83]

Key points from experts

Kimberly A. Workowski, MD, professor of medicine in the Division of Infectious Diseases at Emory University and lead author of the Centers for Disease Control and Prevention clinical practice guidelines, says the accuracy of the guidelines depends not only on the laboratory method but also on the correct type of specimen—a vaginal swab in women, a first-pass urine sample in men, and separate swabs from non-sexually exposed areas. [84] [85]

Nicola Low, MD, MSc, is a public health specialist and professor of epidemiology and public health at the University of Bern. Her research focuses on the epidemiology and prevention of sexually transmitted infections and the evaluation of screening programs; her practical thesis is that accessible self-collection is only useful when a validated assay is used and the patient receives a clear path forward in the event of a positive result. [86]

John A. White, MD, Consultant in Sexual Health and Human Immunodeficiency Virus Medicine, is the lead author of the 2025 European Guidelines for Chlamydia trachomatis Infections. The key diagnostic principle of the guidelines is to use only validated nucleic acid amplification tests, to consider urogenital and extragenital sites, and to use self-collected specimens where their accuracy has been confirmed. [87] [88]

Kelly J. Aaron et al., a 2023 meta-analysis comparing vaginal swabs and urine, concluded that the study's primary outcome was that vaginal swabs detect more cases of chlamydia in women than urine; the convenience of urine should not automatically outweigh diagnostic sensitivity. [89]

Experts from the World Health Organization. In their updated 2025 information material, they call molecular tests the standard of diagnostics, emphasize the dependence of the sample on sexual practices and medical history, and support self-collection of samples, since its results are comparable to samples taken by a health care professional. [90]

Result

The term "chlamydia smear" should not refer to a standard smear test, but to the testing of a properly selected sample using a validated nucleic acid amplification test. Only this approach allows for the reliable detection of Chlamydia trachomatis in people with and without symptoms. [91]

For women, a vaginal swab is preferred, as it can be safely collected independently. For men, the first portion of urine is more often used for a routine urogenital examination, while a urethral swab is especially useful in cases of discharge and severe inflammation. [92]

After anal or oral contact, separate swabs from the rectum and oropharynx may be necessary. A negative result from one area does not rule out infection in the other, so the physician needs to know the actual types of sexual contact. [93]

In cases of very recent risk, an early negative test is sometimes repeated 2 weeks after exposure. After treatment, molecular monitoring is not performed until 4 weeks unless otherwise indicated, and a repeat test approximately 3 months later helps detect new infection. [94]

A positive smear requires not only antibiotics but also testing for other infections, treatment of sexual partners, and temporary abstinence from sexual intercourse until treatment is completed. Comprehensive management prevents re-infection and complications. [95]