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Tacrolimus (immunoassay)
MessagePerformed in the Chemistry Laboratory (x6-5820) on weekends and holidays only.
On weekdays, tacrolimus is run by the LC-MS/MS method (see test code TACRO).
Half-life is 12 hours.
On weekdays, tacrolimus is run by the LC-MS/MS method (see test code TACRO).
Half-life is 12 hours.
Test Code
TACRI
Alias/See Also
FK506
CPT Codes
80197
Preferred Specimen
Purple top (EDTA). Whole blood only. Tube cannot be used if plasma has been removed
Minimum Volume
1.0mL
Other Acceptable Specimens
Purple top (EDTA) is the only acceptable specimen.
Instructions
Therapeutic monitoring: TROUGH: collect within an hour of next dose
Transport Temperature
Room temperature
Methodology
Immunoassay (Abbott Architect i2000)
Setup Schedule
Tacrolimus by immunoassay is run on holidays and weekends only. Specimens must be in the lab by 9:30 AM for same day results. On weekdays, please order tacrolimus by LC-MS/MS (see test code TACRO).
Reference Range
Trough: 3-20 ng/mL. Therapeutic goal depends on type of transplant and time since transplant
Note: The immunoassay method (test code TACRI) produces measurements that are approximately 10-15% higher than LC-MS/MS (test code TACRO)
Note: The immunoassay method (test code TACRI) produces measurements that are approximately 10-15% higher than LC-MS/MS (test code TACRO)
