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TACRO
TACROLIMUS (FK506), BLOOD

Test Code TACRO 
Test TACROLIMUS (FK506), BLOOD 
Methodology Chemiluminesence Microparticle Immunoassay (CMIA) 
Description Useful for the quantitative measurement of the drug in whole blood to guide dosage adjustments for optimal immunosuppression while minimizing toxicity. 
Specimen Draw blood in a lavender-top (EDTA) tube, and send 4.5 mL (0.3 mL minimum) of EDTA whole blood refrigerated. DO NOT CENTRIFUGE. Send in original VACUTAINER® tube. 
Reference Values Therapeutic Ranges for 12 hour Trough samples:
<= 3 months post renal transplant: 12.0 - 15.0 ng/mL
3 - 12 months post renal transplant: 8.0 - 12.0 ng/mL
> 12 months post renal transplant: 3.0 - 6.0 ng/mL

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

Analytic Time 1 Day 
Day(s) Test Set Up Monday through Sunday --Must be received by noon for same day results 
CPT Code(s) 80197