Table 2 AKUHN non-parametrically derived neonatal reference intervals for free thyroxine (fT4)
Age (days) | Number (gender) | Lower Limit (pmol/L) | Median | Upper Limit (pmol/L) |
|---|---|---|---|---|
(90 % confidence limits) | (90 % confidence limits) | |||
0 to 7 | 259 (M) | 13.62 (12.98–14.16) | 25.10 | 34.75 (33.64–35.67) |
293 (F) | ||||
8 to 14 | 73 (M) | 13.45 (10.68–15.44) | 22.27 | 30.17 (27.93–32.18) |
72 (F) | ||||
15 to 22 | 215 (M) | 14.16 (13.26–14.63) | 19.56 | 24.80 (23.98–25.48) |
250 (F) | ||||
23 to 30 | 87 (M) | 13.26 (12.23–13.90) | 18.15 | 23.37 (22.39–26.64) |
80 (F) |