Table 2.
Method and trimester specific TSH and FT4 medians and reference ranges using Roche Cobas e601/E-170, e411/ Elecsys methods.
| FT4 1st Trimester Median (Reference Interval) (n = ) | FT4 2nd Trimester Median (Reference Interval) (n = ) | FT4 3rd Trimester Median (Reference Interval) (n = ) | TSH 1st Trimester Median (Reference Interval) (n = ) | TSH 2nd Trimester Median (Reference Interval) (n = ) | TSH 3rd Trimester Median (Reference Interval) (n = ) | |
|---|---|---|---|---|---|---|
| UAE 2016 | 14.89 (11.73 – 20.39) (n = 136) | 12.57 (9.25 – 17.22) (n = 146) | 11.77 (8.71 – 15.26) (n = 132) | 1.1 (0.094 – 3.33) (n = 136) | 1.62 (0.052 – 4.56) (n = 146) | 1.84 (0.44 – 4.75) (n = 132) |
| India 2008 | 14.46 (12.00 – 19.45) (n = 107) | 13.4 (9.48 – 19.58) (n = 137) | 13.28 (11.3 – 17.7) (n = 87) | 2.1 (0.60 – 5.00) (n = 107) | 2.4 (0.40 – 5.78) (n = 137) | 2.1 (0.74 – 5.70) (n = 87) |
| Canada 2008 | 15.0 (11.0 – 19.0) (n = 224) | 13.5 (9.7 – 17.5) (n = 240) | 11.7 (8.1 – 15.3) (n = 211) | N/A | N/A | N/A |
| USA 2007 | N/A | N/A | N/A | 0.91 (0.28 – 1.06) (n = 71) | 1.03 (0.57 – 1.28) (n = 83) | 1.32 (0.69 – 2.87) (n = 62) |
| China 2013 | 15.84 (12.35 – 20.71) (n = 1024) | N/A | N/A | 1.66 (0.14 – 4.87) (n = 1024) | N/A | N/A |
| UK 2007 | 14.6 (10.7 – 19.4 (n = 1089) | N/A | N/A | 1.08 (0.14 – 3.19) (n = 1089) (n = 0893.19) | N/A | N/A |