Red serum vial/tube, 5 mL

1. Allow sample to clot
2. Spin
3. Transfer serum to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as serum
4. Freeze within 45 minutes of sample collection

Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Dk green heparin (Li or Na), no gel

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10 times, to prevent clotting

1. Spin
2. Transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as the appropriate plasma type
3. Freeze within 45 minutes of sample collection

Frozen (preferred) - > 2 weeks

Refrigerated - NO

Ambient - 24 hours

• Severe hemolysis 
• Samples thawed for greater than 24 hours

Liquid Chromatography/Mass Spectrometry (LC/MS)