Tacrolimus
Orderable EAP code:
Billable EAP Codes:
CPT Codes:
Lab Section:
Turnaround Time:
Routine: 1 day
Test Schedule:
Monday through Friday.
Units:
Critical Values:
20 ng/mL or greater.
Specimen Requirements:
3 mL blood in a LAVENDER top tube (EDTA); redraw if specimen clotted. Specimen is stable for up to 7 days refrigerated (2 to 8 C). If testing is delayed more than 7 days, store frozen at -10 C or less.
Pediatric Specimen Requirements:
0.5 mL blood in a LAVENDER top tube (EDTA); redraw if specimen clotted. Specimen is stable for up to 7 days refrigerated (2 to 8 C). If testing is delayed more than 7 days, store frozen at -10 C or less.
Reference Range:
Therapeutic range: 5 to 15 ng/mL
Comments:
Test performed by immunoassay using Abbott Architect i2000.
Samples for analysis of Tacrolimus should be collected 30 minutes to 1 hour prior to the next dose so that the measured concentration of drug represents trough level. Some other factors influencing therapeutic range, dose administered, and result interpretation include time since transplantation, the organ transplanted, co-administration of other immunosuppressants and interaction with other drugs that may increase or decrease Tacrolimus concentrations.
Synonyms:
FK506 (Tacrolimus), Whole Blood