Tacrolimus (FK506)
Test code
CPT code(s)*
Test resources
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Details
Methodology
Immunoassay (IA)
Alternative name(s)
FK506
Specimen requirements | |
|---|---|
| Patient preparation | Collect specimen 1 hour prior to next dose (12 hour trough) |
| Preferred specimen(s) | 1 mL whole blood collected in an EDTA (lavender-top) tube |
| Alternative specimen(s) | Whole blood collected in an EDTA (royal blue-top) tube |
| Minimum volume | 0.5 mL |
| Collection instructions | If sample is to be frozen, mix and aliquot into a plastic screw-cap vial before shipping |
| Transport container | Plastic screw-cap vial |
| Transport temperature | Room temperature |
| Specimen stability | Room temperature: 7 days Refrigerated: 7 days Frozen: 60 days |
| Reject criteria | Clotted specimen |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
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