Table 1.

Age at initial capillary sampling in Scottish infants referred with TSH elevation during seven 5-year time periods from 1980 to 2014 (required standard =≤7 days)

Time period	Referred, n	Median,  days	Tested at 4–7 days, n (%)	Tested 8–10 days, n,(%)	Tested >10 days, n (%)	Unknown
1980–1984	95	7	56 (58.9)	27 (28.4)	11 (11.5)	1
1985–1989	147	6	105 (71.4)	27 (18.3)	15 (10.2)	0
1990–1994	119	7	83 (69.7)	24 (20.1)	10 (8.4)	2
1995–1999	112	6	93 (83.0)	14 (12.5)	4 (3.5)	1
2000–2004	150	6	123 (82.0)	17 (11.3)	10 (6.6)	1
2005–2009	156	5	144 (92.3)	7 (4.4)	3 (1.9)	2
2010–2014	140	5	136 (96.4)	3 (2.1)	2 (1.4)	0

n, number; TSH, thyroid-stimulating hormone.