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Mnemonic:    [MetHgb]
Name:    Methemoglobin
Specimen:    1 heparinized whole blood sample in a blood gas syringe collected from an arterial site or an appropriate line port. Remove needle after collection and expel excess air with dead-cap device. Send to lab immediately. Sample may be analyzed from a full heparinized green top tube. Do not use gel.
Spec Stability:    Stable 4 hours refrigerated
Reference Range:    MetHb 0.0 - 1.5 %
Processing Info:    Analyzed on Blood Gas Test Site; deliver to chemistry