Tacrolimus Level

Message

Sendout, UCI test code: FK506

Test Code

LAB876

Alias/See Also

FK506
Prograf

CPT Codes
80197

Preferred Specimen

3 ml. whole blood in a lavender EDTA tube. DO NOT SHARE TUBE WITH OTHER TESTS.

Minimum Volume

0.5 mL

Other Acceptable Specimens

Pink EDTA tube

Instructions

Specimen must arrive at UCI within 72 hours of draw.

Transport Container

Original container

Transport Temperature

Ambient

Specimen Stability

Ambient: 72 hours

Refrigerated: 7 days

Frozen: 14 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Specimens that exceed stated stability, unlabeled/mislabeled/mismatched specimens, specimens submitted in leaking containers

Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LCMS/MS

FDA Status
Approved

Setup Schedule

Daily. Cutoff time is 12:00 noon.

Report Available

4 - 6 hours upon receipt at UCI

Reference Range

Included with report

Clinical Significance

Collecting sample just before the next dose will be adequate for monitoring purposes. Optimal response to tacrolimus is usually associated with the trough blood concentration (i.e., the minimum concentration experienced just before the next dose).

Performing Laboratory
UCI Medical Center, Orange, California

Additional Information
Tacrolimus

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.