Table 3: Differences in anion gap (AG) between the two analyzers for samples from patients with severe acidemia, end-stage renal disease, and lactic acidosis.
Patient cohortDifference in AG (cAG − gAG)
Severe acidemia ( 𝑛 = 3 2 ) 5.0 ± 4.0 (1.0–24.0)
End-stage renal disease ( 𝑛 = 3 7 ) 4.6 ± 3.8 (1.0–24.0)
Lactic acidosis ( 𝑛 = 9 ) 6.3 ± 3.9 (1.0–13.0)
Values are means ± SD (range). cAG = Na+ (Central analyzer) − Cl− (Central analyzer) − bicarbonate ( H C O 3 − ) , gAG = Na+ (Blood gas analyzer) − Cl− (Blood gas analyzer) −   H C O 3 − .