Endocrine Abstracts

Background: In Scotland median age at notification with elevated capillary (c) TSH (>25 initially or >8 μ/l on repeat testing) is 10 (range 3–35) days. If cTSH elevation is >100 μ/l decompensated hypothyroidism (moderate: free (f) T4 5 −<10, severe: <5 pmol/l) is likely and thyroxine treatment should start without delay. If TSH elevation is mild the clinician may prefer to wait for venous (v) fT4 result and observe the infant’s pro...