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Laboratory Test Directory

Tacrolimus (Updated)


Name Method Department Units
Tacrolimus Chemiluminescence
Core Lab, Endocrinology ng/mL

Specimen Requirements

Whole blood

Container Type Container Size Specimen Volume

Purple tube (EDTA)

3 mL 2 mL

Purple tube (EDTA)

Micro sample tube 1 mL

Room temperature - 4 day(s)
Refrigerated - 7 day(s)

Specimen Preparation

  • Mix EDTA tube by gentle inversion immediately after collection
  • Transport to laboratory as soon as possible

Reasons for Rejection

  • Wrong collection tube
  • Wrong type of specimen
  • Clotted specimen
  • Non EDTA specimen


The therapeutic range is used as a general guideline only. Testing is done at 11:00 am daily.

CPT Code

  • 80197