Table 3.

The results of reference interval validation in 5 laboratories

Analytes	Age group (y)	Sex group	Reference intervals	N a	Lab 1		Lab 2		Lab 3		Lab 4		Lab 5
					n b	Result, %c	n b	Result, %c	n b	Result, %c	n b	Result, %c	n b	Result, %c
ALT (U/L)	2	F + M	8–24	20	2	90	1	95	1	95	1	95	1	95
	3 to < 6	F + M	7–23	20	2	90	2	90	2	90	2	90	1	95
	7 to < 10	F + M	4–19	20	2	90	2	90	2	90	2	90	0	100
	11 to < 14	F	5–25	20	1	95	0	100	2	90	2	90	0	100
		M	5–35	20	1	95	0	100	0	100	0	100	1	95
AST (U/L)	2	F + M	27–49	20	2	90	2	90	1	95	2	90	2	90
	3 to < 5	F + M	22–44	20	0	100	2	90	0	100	2	90	1	95
	6	F + M	18–40	20	0	100	1	95	0	100	0	100	0	100
	7 to < 12	F	11–35	20	1	95	2	90	0	100	1	95	1	95
		M	13–39	20	0	100	2	90	0	100	2	90	0	100
	13 to < 14	F	14–26	20	1	95	2	90	2	90	2	90	0	100
		M	13–36	20	1	95	1	95	0	100	2	90	1	95
GGT (U/L)	2 to < 4	F + M	8–16	20	0	100	0	100	0	100	2	90	2	90
	5 to < 10	F + M	8–21	20	1	95	0	100	0	100	2	90	1	95
	11 to < 14	F	8–29	20	0	100	2	90	2	90	2	90	0	100
		M	10–43	20	1	95	0	100	2	90	0	100	2	90
ALP (U/L)	2 to < 3	F + M	160–376	20	2	90	2	90	2	90	2	90	0	100
	4 to < 9	F + M	143–362	20	1	95	2	90	0	100	1	95	0	100
	10 to < 12	F + M	116–426	20	0	100	2	90	0	100	2	90	2	90
	13 to < 14	F	48–232	20	1	95	1	95	2	90	2	90	2	90
		M	111–486	20	0	100	2	90	0	100	2	90	2	90
TP (g/L)	2 to < 3	F + M	59.5–74.4	20	1	95	2	90	0	95	2	90	1	95
	4 to < 6	F + M	59.2–76.4	20	0	100	1	95	0	100	2	90	0	100
	7 to < 10	F + M	62.5–78.2	20	0	100	2	90	0	100	2	90	1	95
	11 to < 14	F + M	63.6–79.2	20	0	100	1	95	0	100	2	90	2	90
ALB (g/L)	2 to < 10	F + M	40.0–52.3	20	0	100	2	90	0	100	2	90	0	100
	11 to < 14	F + M	41.3–53.1	20	0	100	2	90	0	100	2	90	0	100
TBIL	2 to < 3	F + M	3.00–13.01	20	0	100	1	95	1	95	2	90	0	100
(µmol/L)	4 to < 7	F + M	3.41–14.80	20	0	100	1	95	0	100	1	95	0	100
	8 to < 14	F + M	4.50–16.60	20	0	100	2	90	0	100	2	90	1	95
DBIL	2 to < 3	F + M	0.90–3.30	20	0	100	1	95	2	90	2	90	0	100
(µmol/L)	4 to < 7	F + M	1.10–3.80	20	0	100	2	90	1	95	2	90	0	100
	8 to < 12	F + M	1.60–4.50	20	2	90	2	90	2	90	2	90	2	90
	13 to < 14	F + M	1.20–5.30	20	1	95	2	90	1	95	2	90	0	100

ALT alanine aminotransferase, AST aspartate aminotransferase, GGT γ-glutamyltransferase, ALP alkaline phosphatase, TP total protein, ALB albumin, TBIL total bilirubin, DBIL direct bilirubin, M male, F female. ^aNumber for validation samples of this study. ^bNumber for validation samples outside the reference intervals of this study. ^cThe results of percentage of validation samples inside the reference intervals of this study