Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS)
Therapeutic Drug Monitoring
10 - 35 mcg/mL. No critical levels have been established for this drug.
Collect specimen in a red top tube; do not use SST tube. A lavender (EDTA) or green top (Heparin) tube is also acceptable. Centrifuge, aliquot serum or plasma into a plastic vial, and refrigerate.