Trimester specific thyroid function reference ranges
| Trimester 1 | Trimester 2 | Trimester 3 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| T4 | TSH | T3 | T4 | TSH | T3 | T4 | TSH | T3 | |
| 2.5th | 11.62 | 0.11 | 4.00 | 10.30 | 0.55 | 3.45 | 8.30 | 0.55 | 3.40 |
| 50th | 14.40 | 1.08 | 4.85 | 12.80 | 1.60 | 4.70 | 11.40 | 1.59 | 4.20 |
| 97.5th | 19.24 | 3.25 | 6.39 | 16.60 | 3.13 | 5.85 | 15.59 | 3.91 | 5.46 |