Test ID: Z2850
CPT code: 80299
Specimen Type: Red nongel
Frequency: Setup: Tues, Thurs; analytic time 2 days
Instructions: 1.0mL serum from red nongel tube, frozen. Min 0.3mL. Spin down within 2 hours of draw. Serum gel is acceptable.
Text: Most individuals display optimal response to flucytosine when peak serum levels (1-2 hours after oral dosing) are >25.0 mcg/mL. Some infections may require higher concentrations for efficacy. Toxicity is more likely when peak serum concentrations are >100.0 mcg/mL.
Methodology: Peak to be drawn 30 minutes after IV infusion or 60 minutes after IM
infusion or oral dose. High-Performance Liquid Chromatography (HPLC)