Table 1. Study protocol for decision-making in the screening program of CH.

T4 (g/dL)	TSHa (mU/L)	Decision	Follow-up
≥ 8.5	< 5.5	Discharge	None
≤ 6.49	≥ 10	Treatment	As a CHb case
6.5–9.9	≥ 10	Suspected CH	TFT 2 wks later
6.5–9.9	5–9.9	Suspected CH	TFT 4 wks later
≥ 10	≥ 5	Suspected CH	TFT 4 wks later
Each level	> 6.0 after 60th day (10)	Treatment	As a CH case

^aThyroid stimulating hormone (normal for 2-20 wks = 0.5–5.5);

^bcongenital hypothyroidism.