From: Urinary iodine and thyroid determinants in pregnancy: a follow up study in Sri Lanka
First trimester | Second trimester | Third trimester | |
---|---|---|---|
n | 425 | 389 | 373 |
Weeks (weeks) | 9.5 ± 1.8 | 25.3 ± 1.4 | 36.6 ± 0.6 |
Urinary iodine (μg/L) | |||
Median | 170.90 | 123.80 | 105.00 |
25th – 75th percentiles | 100.00 – 261.10 | 73.50 – 189.50 | 67.00 – 153.50 |
10th – 90th percentiles | 68.40 – 329.70 | 46.00 – 250.30 | 49.20 – 218.80 |
Total range | 6.30 – 491.70 | 5.80 – 466.70 | 16.20 – 505.50 |
n (%) <50 μg/Lb | 18 (4.3) | 36 (9.6) | 40 (10.8) |
n (%) <150 μg/Lb | 159 (37.4) | 168 (45.0) | 232 (62.2) |
n (%) >250 μg/Lb | 124 (29.1) | 37 (10.7) | 26 (6.9) |
Serum TSH (µIU/mL) | |||
Median | 1.30 | 1.60 | |
25th – 75th percentiles | 0.80 – 1.90 | 1.20 – 2.10 | |
10th – 90th percentiles | 0.50 – 2.50 | 0.80 – 2.98 | |
Total range | 0.40 – 16.60 | 0.50 – 11.60 | |
Serum fT4 (pmol/L) | |||
Median | 18.00 | 15.45 | |
25th – 75th percentiles | 15.45 – 23.20 | 11.60 – 21.80 | |
10th – 90th percentiles | 10.60 – 28.30 | 10.30 – 28.30 | |
Total range | 10.30 – 42.50 | 10.30 – 39.90 | |
Serum Thyroglobulin (μg/L) | |||
Median | 5.09 | ||
25th – 75th percentiles | 1.97 – 7.37 | ||
10th – 90th percentiles | 0.38 – 15.65 | ||
Total range | 0.14 – 42.0 |