Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
150 - 300 ng/mL
4 - 8 days
Collect in red or green top tube; do not use SST or PST tube. Centrifuge, aliquot serum or plasma into a plastic vial and refrigerate.
DO NOT USE SST OR PST TUBE
Test sent to Mayo Medical Laboratories; performed by MedTox Laboratories.