Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Determining the level of antimicrobial in serum from treated patients.
Peak: >25 mcg/mL, Toxic: >100 mcg/mL.
3 - 9 days
Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial within 2 hours of collection and refrigerate (preferred). Serum for a peak level should be drawn 30 minutes after completion of infusion of an intravenous dose or 1 - 2 hours after an oral dose; trough specimens should be drawn immediately prior to next scheduled dose.
Test sent to Mayo Medical Laboratories.