Establishment of dry chemistry based reference intervals of renal function test parameters for the adult population of Kaski District, Nepal

Table 2 The established reference intervals for renal function test parameters for male and female adults

Analytes	Sex	Unit	N	Median	Percentiles		Reference Values	Interval values	Difference between Male and Female
Analytes	Sex	Unit	N	Median	2.5	97.5	Reference Values	Interval values	z-value	p-value
Urea	Male	mmol/L	178	8.70	4.70	13.99	4.70–13.99	9.29	−3.966	< 0.001
	Male	mg/dL		24.25	13.09	38.40	13.09–38.40	25.31
	Female	mmol/L	178	7.50	4.20	13.23	4.20–13.23	9.03
	Female	mg/dL		20.85	11.80	36.20	11.80–36.20	24.40
	Total	mmol/L	356	8.05	4.20	13.70	4.20–13.70	9.50
	Total	mg/dL		22.20	11.89	37.81	11.89–37.81	25.92
Creatinine	Male	μmol/L	180	79.60	48.82	106.10	48.82–106.10	57.28	−11.983	< 0.001
	Male	mg/dL		0.90	0.55	1.20	0.55–1.20	0.65
	Female	μmol/L	180	53.00	35.40	83.78	35.40–83.78	48.38
	Female	mg/dL		0.60	0.40	0.90	0.40–0.90	0.5
	Total	μmol/L	360	61.90	44.20	106.10	44.20–106.10	61.9
	Total	mg/dL		0.70	0.50	1.20	0.50–1.20	0.7
Sodium	Male	mmol/L/	178	141	135	146	135–146	11
	Female	mEq/L	180	141	135	146	135–146	11	−0.214	0.831
	Total		358	141	135	146	135–146	11
Potassium	Male	mmol/L/	176	4.40	3.54	5.00	3.54–5.00	1.5
	Female	mEq/L	177	4.30	3.60	5.10	3.60–5.10	1.5	−2.145	0.032
	Total		353	4.30	3.60	5.10	3.60–5.10	1.5

The results are presented as both medians and the percentiles. The RIs are presented as the values between 2.5 and 97.5 of the percentile. The number of participants is indicated under the column labeled N. The RIs with p-values (two tailed) < 0.05 are the ones that differ significantly between male and female

ISSN: 1471-2369