Table 2.
Distributions of serum hormone concentrations (N = 106 pregnant women)
| Biomarker | N | Mean (SD) | Selected percentiles | ||||
|---|---|---|---|---|---|---|---|
| 25th | 50th | 75th | 95th | Max. | |||
| Thyroid hormones | |||||||
| TSH (uIU/mL)† | 195 | 1.13 (1.62) | 0.81 | 1.10 | 1.51 | 2.83 | 4.29 |
| Free T3 (pg/mL) | 195 | 3.94 (0.60) | 3.50 | 3.90 | 4.40 | 4.90 | 5.70 |
| Free T4 (ng/dL) | 195 | 1.39 (0.32) | 1.20 | 1.40 | 1.50 | 1.90 | 3.10 |
| Sex hormones* | |||||||
| Progesterone (ng/mL)† | 193 | 62.8 (1.60) | 45.7 | 57.3 | 82.0 | 140 | 374 |
| Estradiol (ng/mL) | 189 | 8.16 (4.06) | 4.79 | 7.58 | 11.8 | 15.0 | 15.0 |
| SHBG (nmol/L) | 157 | 368 (109) | 293 | 352 | 428 | 563 | 736 |
SD, standard deviation, TSH, thyroid-stimulating hormone, SHBG, sex hormone-binding globulin.
†Geometric mean and geometric standard deviation reported.
*Limitations in sample volume contributed to differences in available samples for each sex hormone.