Therapeutic drug management
Red serum vial/tube, 5 mL
Spin and separate within two (2) hours of specimen collection
Transfer vial/tube with cap - 12mL (LabCorp)
Dk green heparin (Li or Na), no gel
Ambient (preferred) - 3 days
Refrigerated (OK)
Frozen (OK)
Gas chromatography/mass spectrometry (GC/MS)
10 - 100 ng/mL