Table 2.

Percentiles of TSH values (μIU/ml) based on different PMA in preterm infants with GA < 32 weeks.

PMA, week	No. TSH values	TSH percentile
		2.5th	5th	50th	95th	97.5th
26–27	24	1.09	1.19	4.43	10.33	11.32
28	52	1.13	1.50	5.17	13.71	16.27
29	104	0.74	1.04	5.44	13.82	16.69
30	204	0.79	1.25	5.22	15.92	17.38
31	328	0.85	1.25	4.56	11.10	13.86
32	469	0.83	1.23	4.85	13.30	14.41
33	378	1.13	1.33	4.53	11.54	12.99
34	287	1.16	1.31	4.66	10.64	12.33
35	142	1.39	1.89	5.70	12.00	12.92
36	229	1.18	1.35	4.23	11.52	12.30
37	39	1.60	1.92	4.97	10.49	11.90
38–40	50	1.47	1.63	4.63	9.00	9.07
Total	2,306	1.02	1.32	4.78	12.30	14.13