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Percentiles (2.5, 50 and 97.5) of the target reference range for FT4 and TSH concentrations of neonates and infants based on postnatal age taken from [25]
| FT4 (pmol/l) | TSH (mU/l) | |||||
|---|---|---|---|---|---|---|
| Percentile | 2.5 | 50 | 97.5 | 2.5 | 50 | 97.5 |
| Postnatal age | ||||||
| 0–1 months | 8.50 | 20.10 | 30.50 | 0.70 | 3.50 | 18.10 |
| 1–12 months | 9.17 | 15.50 | 25.28 | 1.12 | 2.85 | 8.21 |
| 1–5 years | 10.45 | 15.70 | 22.35 | 0.80 | 2.70 | 6.26 |
