| Ordering Code | 5462 |
|---|---|
| Test Name | Tacrolimus |
| Alias | FK506 Prograf |
| Preferred Specimen | Whole Blood |
| Preferred Container | EDTA, K2 (Lavender) |
| Optimum Volume | 2 mL |
| Handling Instructions | Do NOT centrifuge specimen. |
| Transport Requirements | Oahu: Refrigerated Airline: Refrigerated |
| Specimen Stability | Refrigerated: 7 Days Frozen: 6 Months If testing will be delayed more than 7 days, store frozen (-10 C or colder). |
| Rejection Criteria | Clotted, Gel barrier tube, Insufficient quantity, Over filled tube, Specimen older than stability limits, Under filled tube, Wrong specimen type |
| Avail. Stat | NO |
| Analytic Time | 1 Day |
| Methodology | Chemiluminescent Microparticle Immunoassay (CMIA) |
Reference range(s)
The reference ranges listed below are valid on this date of November 22, 2025.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| Tacrolimus | ALL | 5.0-20.0 | 5.0-20.0 | ng/mL | This test was... Note1 |
Note1:
This test was performed using a Chemiluminescent
Microparticle Immunoassay on the Abbott Architect system. Values obtained with a different assay cannot be used interchangeably due to differences in assay methods and cross-reactivity with metabolites. Consistent use of one assay for individual patients is recommended
.
