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Maternal Thyroid Function
| Time
|
Thyrotropin (TSH) mIU/L
|
Free Thyroxine (FT4) pmol/L
|
| 9-12 weeks
|
0.18 - 2.99
|
11 - 19.2
|
| second trimester
|
0.11 - 3.98
|
10.5 - 18.2
|
| third trimester
|
0.48 - 4.71
|
9.0 - 16.1
|
| Total T4 (TT4) reference interval after 19 weeks GA was 77 - 186 nmol/L.
Data[1] - 95th percentile reference
|
- ↑ Donovan LE, Metcalfe A, Chin AC, Yamamoto JM, Virtanen H, Johnson JA & Krause R. (2018). A Practical Approach for the Verification and Determination of Site and Trimester Specific Reference Intervals for Thyroid Function Tests in Pregnancy. Thyroid , , . PMID: 30595114 DOI.
