Test Code TACRO
Tacrolimus (FK506), Blood
Performing Laboratory
NorDx
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
Methodology
High Performance Liquid Chromatography/Tandem Mass Spectrometry (HPLC-MS/MS)
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®.
Day(s) Test Set Up
Monday through Sunday (Must be received by noon for same day results.)
Test Classification and CPT Coding
80197