Container/Tube: Green-top (heparin) tube-Plasma gel tube is not acceptable.
Specimen Volume: 5 mL of heparinized whole blood
Transport Temperature: Refrigerate
Collection Instructions: Collect blood in a lithium heparin vacutainer tube. Forward promptly.
Stability-Whole blood samples should be refrigerated during transport and analyzed within 3 days
Smokers: 2.5-9.0%
Critical value (automatic call-back): >15%
Available STAT