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Test Code METHB Methemoglobin, Blood

Methodology

Co-Oximetry

Performing Laboratory

St. Clair Hospital Laboratory

Specimen Requirements

Specimen must arrive within 1 hour of draw.

 

1 green-top (heparin) tube (1 mL of heparinized whole blood) or 1 lithium heparin blood gas syringe (1 mL of whole blood). If green-top tube is used, invert 5 to 6 times before placing on wet ice slush. Syringe should be placed in wet ice slush immediately after draw.

Reference Values

<1.5% total hemoglobin

Day(s) Test Set Up

Monday through Sunday