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80146M
TRIMETHOPRIM, SERUM

Test Code 80146M 
Test TRIMETHOPRIM, SERUM 
Methodology High-Performance Liquid Chromatography (HPLC) 
Description Useful for monitoring trimethoprim therapy to ensure drug absorption, clearance, or compliance. 
Specimen Draw blood in a plain, red-top tube(s). (SERUM GEL TUBE IS NOT ACCEPTABLE.) Serum for a peak level should be drawn at least 60 minutes after a dose. Spin down within 2 hours of draw and send 1 mL (minimum of 0.2 mL) of serum frozen in plastic vial. 
Reference Values > 2.0 mcg/mL 
Analytic Time 2 Days 
Day(s) Test Set Up Wednesday 
CPT Code(s) 80299