Total thyroxin in the blood
Last reviewed: 19.11.2021
All iLive content is medically reviewed or fact checked to ensure as much factual accuracy as possible.
We have strict sourcing guidelines and only link to reputable media sites, academic research institutions and, whenever possible, medically peer reviewed studies. Note that the numbers in parentheses ([1], [2], etc.) are clickable links to these studies.
If you feel that any of our content is inaccurate, out-of-date, or otherwise questionable, please select it and press Ctrl + Enter.
T 4 (thyroxine) - the main hormone of the thyroid gland. Its concentration in the blood exceeds that of T 3 by 60 times. The elimination half-life is 5-7 days.
The reference values (norm) of the concentration of total T 4 (thyroxine) in serum
|
Age |
T 4, nmol / l |
|
Newborns: |
95-168 |
|
0-5 days |
152-292 |
|
11-15 days |
126-214 |
|
> 15 days |
93-186 |
|
Children: | |
|
1-5 years |
94-194 |
|
5-10 years |
83-172 |
|
Adults 10-60 years old | |
|
Men's |
59-155 |
|
Women |
71-142 |
|
> 60 years |
65-138 |