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This calculator uses an algorithmic approach to arterial blood gas interpretation.
pH
Normal 7.35 - 7.45
 
PaCO₂
Normal 36 - 44
 
HCO₃
Normal 22 - 26
 
Na⁺
 
Cl⁻
 
 
Albumin
 
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Anion Gap = Na - (HCO₃ + Cl)

Gap-Gap Ratio =
Anion Gap - 12 24-HCO₃
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