Test Overview
Test Methodology

Liquid Chromatography/Mass Spectrometry (LC/MS)

Test Usage

To monitor tacrolimus levels in blood to prevent toxicity and maintain proper therapeutic dosage.

Reference Range *

5.0 - 20.0 ng/mL

Test Limitations

Lower limit of reporting:

Test Details
Days Set Up
Daily
Analytic Time

8 hours

Soft Order Code
TACRO
MiChart Code
Tacrolimus Level, Random
Synonyms
  • FK506
  • Prograf
  • TACROLIMUS (FK506)
  • TACRO
  • TACROLIMUS (FK506) LEVEL
Laboratory
Chemical Pathology
Section
Drug Analysis
Specimen Requirements
Collection Instructions

Collect a trough specimen (draw immediately prior to next dose) in a lavender top tube. Mix collection tube gently by inversion to prevent clotting. Send intact specimen; do NOT centrifuge. Refrigerate.

Lavender Top Tube
Normal Volume
2 mL whole blood
Minimum Volume
2 mL whole blood
Additional Information

Tacrolimus is used as a primary immunosuppressant and as secondary treatment for rejection following transplantation.

Billing
CPT Code
80197
Fee Code
20532
LOINC
74097-7
NY State Approved
No