Therapeutic drug management
Trough levels are most reproducible
Spin and separate
Dk green heparin (Li or Na), no gel
Spin and separate
Refrigerated (preferred) - 14 days
Ambient - 3 days
Frozen - 180 days
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Expected plasma concentrations in patients taking recommended daily dosages: up to 60.0 µg/mL.