Potential Inaccuracies in Chloride Measurements in Patients with Severe Metabolic Acidosis

Table 2

Chloride concentrations measured by two analyzers in samples containing 3.5% albumin-acetate Ringer’s solution supplemented with different ionic concentrations of lactate or phosphate.

Cl^− (mmol/L)	Lactate concentration (mg/dL)
	0	50	100
ABL800FLEX^*	104.7 ± 0.6	103.7 ± 0.6	104.7 ± 1.2
Hitachi7600^*	99.0 ± 0.1	97.5 ± 0.2	98.5 ± 0.6
	PO4^3− concentration (mg/dL)
	0	10	20
ABL800FLEX^*	104.7 ± 0.6	105.3 ± 0.6	104.3 ± 0.6
Hitachi7600^*	99.0 ± 0.1	98.1 ± 0.3	97.2 ± 0.3

Values are means ± SD. ^∗𝑃>0.05 for comparisons across lactate/PO₄³⁻ concentrations. Cl⁻: chloride; PO₄³⁻: phosphate.