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HelpTest Code LAB876 Tacrolimus, Blood
Performing Laboratory
Mohawk Valley Health System Laboratory
Day(s) Performed
Performed: M,W,F
Routine TAT: 1-3 Days
Intended Use
Monitoring whole blood tacrolimus concentration during therapy, particularly in individuals coadministered cytochrome P450 (CYP) 3A4 substrates, inhibitors, or inducers
Adjusting dose to optimize immunosuppression while minimizing toxicity
Evaluating patient compliance
Specimen Collection and Handling
Container/Tube: Lavender top (EDTA)
Specimen Volume: 3 mL
Collection Instructions:
1. Draw blood immediately before a schedule dose.
2. Do not centrifuge.
3. Send whole blood specimen in original tube. Do not aliquot.
Additional Information: Therapeutic range applies to trough specimens collected immediately prior to a.m. dose.
Storage
Refrigerated transport. DO NOT ALIQUOT.
| Whole Blood EDTA | Refrigerated (preferred) | 7 Days | |
| Ambient | 8 Hours | ||
| Frozen | 6 Months |