Therapeutic drug management
Dk green heparin (Li or Na), no gel
Immediately following collection, mix sample thoroughly by gently inverting 5 - 10 times, to prevent clotting
Ambient (preferred) - 3 days
For storage beyond three days, specimen should be refrigerated or frozen.
High-pressure liquid chromatography with ultraviolet detection (HPLC/UV)
Therapeutic and toxic ranges have not been established.
Expected serum concentrations in patients receiving recommended daily dosages: 20 - 160 µg/mL