Table 1.

Stability of electrolytes in the dialysate at room temperature and 4°C

	Analyte concentrationsa
	Calcium, mg/dl		Chloride, mmol/l		Bicarbonate, mmol/l		Glucose, mg/dl		Potassium, mmol/l		Lactate, mmol/l		Magnesium, mg/dl		Sodium, mmol/l
	Room Temp	4°C	Room Temp	4°C	Room Temp	4°C	Room Temp	4°C	Room Temp	4°C	Room Temp	4°C	Room Temp	4°C	Room Temp	4°C
Time point
BL	5.2	5.1	104	104	29.9	29.8	108	107	2.1	2.2	0	0	1.29	1.25	140	140
~6 h	5.3	5.2	103	103	31.9	32.1	106	107	2.2	2.2	0	0	1.28	1.3	140	140
~9 h	5.2	5.1	104	104	31.6	32.7	109	109	2.1	2.1	0	0	1.28	1.23	140	140
~12 h	5.2	5.1	104	104	32.4	31.3	104	107	2.2	2.1	0	0	1.25	1.26	141	140
~24 h	5	5	104	103	31.3	32.9	106	106	2.1	2.1	0	0	1.32	1.33	139	140
Percent difference (BL–24 h), %	-3.8	-2	0	-1	4.7	10.4	-1.9	-0.9	0	-4.5	N/A	N/A	2.3	6.4	-0.7	0

BL, baseline; Temp, temperature; N/A, not applicable.

^aThe hemodialysis machine dialysate settings were: sodium 140 mEq/l , potassium 2.0 mEq/l, calcium 2.5 mEq/l, and bicarbonate 30 mEq/l.