Carboxyhemoglobin
Container/Tube Type:
Dark Green (Sodium Heparin)
Green No Gel (Lithium Heparin)
Collection Information:
Whole Blood - Avoid exposure of specimen to atmosphere
Transport Information:
1.0 mL blood in 4 mL Green top tube
Minimum Sample Volume: 
0.5 mL blood in heparinized syringe
Remarks:
A Light green collection tube with gel is less than optimal but can be used if the sample is not centrifuged.
Unacceptable Conditions:
Lavender collection tubes, samples with prolonged air exposure.
Stability
Refrigerated Stability:
Ambient Stability: