In This Section

Available Tests

  • Tacrolimus; Timed

Tacrolimus; Timed

Tube Type

Test ID   LAB5366
CPT Code(s)   80197
Group/Individual Test   Individual
  Core- performed by: Special Chemistry Lab
Tube Station   30
Specimen Routine: 5 mL blood/lavender top tube; see  Comments
  Micro: 500 µL blood/lavender top bullet

Room Temperature: 14 days

Off Site Collections:
Ambient/Room Temp. is acceptable. Samples may be refrigerated (2 - 8°C). Do NOT freeze.
Ambient: 14 Days
Refrigerated: 14 Days
Frozen - Not Acceptable
Availability Routine: Daily; Not available STAT; see Comments
Turnaround Time  

Samples for tacrolimus testing must be in the Core Laboratory by 12 pm (noon) for same day testing. Samples received after noon will be run the following day.
Results are available by 4pm.

Reference Range  

5-15 ng/mL (Trough, steady state)

The above ranges are published as rough guidelines only. Concentrations targeted depend upon the drug regimen used, the type of transplant, time post-transplantation, and other clinical factors such as renal function, rejection status, etc.

Internal Reference Testing Specimen Handling Instructions: Whole blood, Refrigerate

Methodology: Liquid Chromatography Tandem Mass Spectrometry

-Used for pharmocokinetic studies. Time of collection since dose, must be documented.

-Multiple test requests with same sample type will require additional volumes for testing.
-Pediatric microtainers (“bullets”) available from Phlebotomy Services

Reviewed by gloria_crawford on January 31, 2017

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514