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Test Code TACRO Tacrolimus (FK506), Blood

Performing Laboratory

NorDx

Specimen Requirements

Draw blood in a lavender-top (EDTA) tube, and send 4.5 mL (minimum volume: 0.3 mL) of EDTA whole blood refrigerated. DO NOT CENTRIFUGE. Send in original VACUTAINER®.

Test Classification and CPT Coding

80197  

Methodology

High Performance Liquid Chromatography/Tandem Mass Spectrometry (HPLC-MS/MS) 

Reference Values

Therapeutic Ranges:
≤3 months post renal transplant: 12.0-15.0 ng/mL
>3 months post renal transplant: 8.0-12.0 ng/mL

Potentially Toxic: 15.1-20.0 ng/mL
Toxic: >20.0 ng/mL

Day(s) Test Set Up

Monday through Sunday (Must be received by noon for same day results.)