Red top tube
2 mL serum
0.3 mL serum
Collect blood in a red top tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.
Collect blood in a red top tube.
Monday, Wednesday, Friday
8 hours
Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS)
Therapeutic 1 - 3 mcg/mL. Toxic: Greater than 3.5 mcg/mL.
Monitor therapeutic drug level.
3433-0
80157
33193
Heparinized (green top) or EDTA (lavender top) plasma is acceptable.