Towards improved neonatal care: Developing reference intervals for biochemical parameters in umbilical cord blood: An Indian study

Table 4 mean ± SD or median comparison with company derived values, other published reference values and peripheral venous blood with current study results

Parameter	PVB[19]	Current Study			China[17]	Korea[16]
	RI	RI	Median	Mean	Median	Mean
Direct bilirubin (mg/dL)	0.33–0.71	0.1-0.55	0.3	0.354	NA	NA
Indirect bilirubin (mg/dL)	NA	0.64-2.262	1.4	1.453	NA	NA
Total bilirubin (mg/dL)	0.19–16.6	0.62-3.14	1.9	1.879	NA	0.5
Creatinine (mg/dL)	0.32–0.92	0.27-0.76	0.56	0.511	NA	0.38
Chloride (mEq/L)	102–111	100.19-111.68	106	105.94	101	NA
Potassium (mEq/L)	3.7–5.9	1.62–9.98	5.085	5.797	4.05	NA
Sodium (mEq/L)	133–146	128.19-143.26	136.3	135.72	135	NA
Glucose (mg/dL)	30–60	24.75–94.23	57.2	59.49	NA	96.5

PVB: Peripheral venous blood; NA: Not available; RI: Reference interval.