Sources of Error in Arterial Blood Gases Clinical Chemistry Review 127
ERROR EFFECT
Hyperventilation ↓PCO 2 ,↑pH, ↑PO 2
Specimen exposed to air ↓PCO 2 , ↑pH, ↑PO 2
Specimen at RT >30 minutes ↓PO 2 , ↓pH, ↑PCO 2
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Hyperventilation ↓PCO 2 ,↑pH, ↑PO 2
Specimen exposed to air ↓PCO 2 , ↑pH, ↑PO 2
Specimen at RT >30 minutes ↓PO 2 , ↓pH, ↑PCO 2