List Analyzes – L
Lymphocytes - the main cellular element of the immune system - are formed in the bone marrow, actively function in the lymphoid tissue.
In Lyme disease, specific IgM antibodies usually appear in the blood 2-4 weeks after the onset of migratory erythema, the peak of antibodies occurs in the 6-8th week of the disease. In stage 1, IgM antibodies are detected in 40-60% of patients.
Luteinizing hormone is the peptide hormone of the anterior lobe of the pituitary gland. Targets of luteinizing hormone in women include ovarian cells and the yellow body. Luteinizing hormone stimulates ovulation and activates in ovarian cells the synthesis of estrogens and progesterone. It activates the synthesis of testosterone in the cells of the Leidig testis in men
Lupus cells serve as a morphological manifestation of the immunological phenomenon characteristic of systemic lupus erythematosus. They are formed as a result of phagocytosis by neutrophilic leukocytes (less often monocytes) of nuclei of cells containing depolymerized DNA.
Lupus anticoagulant refers to the Ig class IgG and is an antibody against negatively charged phospholipids. He received his name due to the fact that it affects phospholipid-dependent coagulation tests and was first detected in patients with systemic lupus erythematosus.
Cholesterol of low-density lipoproteins (LDL-cholesterol) is the main transport form of cholesterol.
Lithium ions are absorbed into the digestive tract. It is excreted in the urine (95%), feces (1%) and then (5%). The concentration of lithium in saliva is much higher than its concentration in the serum. The blood-brain barrier is permeable to lithium, and its concentration in CSF is 40% of that in serum.
Lipoprotein (a) consists of apo (a), which is inherently a glycoprotein and covalently linked to apo-B100. Lipoprotein (a) has a significant structural similarity with plasminogen.
Lipase is an enzyme that catalyzes the cleavage of glycerides into glycerol and higher fatty acids. This enzyme in the human body is produced by a number of organs and tissues, which makes it possible to distinguish between lipase of gastric origin, pancreas, lungs, intestines, leukocytes, etc.
Leukocytes norm is an indicator of the health of all human systems and organs. Their main task is to provide a protective function, to resist infections, viruses and other malicious agents.
Leukocytes in the urine - this is one of the important indicators of inflammation of the infectious etiology in the body. Because leukocytes perform a protective function, deviations in their number, any changes, whether exceeding or lowering the norm, all this indicates the intrusion of harmful substances - bacteria.
Leukocytes in the blood are one of the most important elements of blood, white, as they are called, blood cells are actually colorless. They are very diverse in structure and have many species and subspecies.
The number of white blood cells (WBC) in circulating blood is an important diagnostic indicator. Leukocytes are formed in the red bone marrow and in the lymph nodes.
Leukocyte formula - the percentage ratio of different types of leukocytes in the blood smear. When evaluating the leukocyte formula, it may be necessary to take into account the absolute content of certain types of leukocytes.
ELISA allows detecting antibodies of classes IgM and IgG to leptospira. Antibodies of IgM class can be found in the blood on the 4th-5th day of the disease, their titer reaches a peak at the 2-3rd week, then decreases within months.
Lactate (lactic acid) is the final product of glycolysis. In conditions of rest, the main source of lactate in the plasma is red blood cells.
Lactate dehydrogenase, a glycolytic zinc-containing enzyme that reversibly catalyzes the oxidation of L-lactate to pyruvic acid, is widely distributed in the human body.
Glomerulonephritis is the most common form of primary kidney disease with a predominant lesion of the renal glomeruli. Currently, the concept of the immunoinflammatory genesis of this disease is generally recognized.