Tacrolimus Level
| Abbrev Code: | TACR | ||
| Order Code: | LAB876 | Order Name: | Tacrolimus Level |
| Order Instructions: | Comment last dose information. Do not cancel this test if the specimen is frozen; comment :specimen frozen" when test requesting. | ||
| Synonyms: | FK-506; Prograf; FK506; Prograph; TACR | ||
| Methodology: | Liquid chromatography/tandem mass spectrometry | ||
| CPT Codes: | 80197 x1 | ||
| Turnaround Time: | Performed and reported daily if received in Drug Analysis Laboratory by 9:30 am. For levels outside of this time frame, contact Drug Analysis at 612-273-5838. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 2 mL |
| Minimum\Peds Volume: | 0.4 mL |
| Container: | Purple (EDTA) |
| Collection Instructions: | Usual sampling time is immediately prior to next dose. Analysis should be performed on trough samples (collected no sooner than 2 hours before the dose) unless a kinetic study is ordered. |
| Causes for Rejection: | Collection in a gel container; clotted specimen. |
Processing and Shipping
| Specimen Processing: | Do not process whole blood. May be stored at room temperature or refrigerated. |
| Shipping Instructions: | Ship at room temperature.
UMMC West Bank only: Send STAT. |
| Stability: | Up to 14 days at room temperature (19-26°C) or refrigerated (2-8°C). For longer storage, freeze at -10°C or colder. |
| Test Performed at or Referral Lab | UM Special Drug/Biochemical Genetics (Y) (UMMC East Bank) |
Interpretive
| Critical Range: | Greater than 20 ug/L | ||||||||||||
| Therapeutic Range: |
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| Use: | Therapeutic monitoring and assess toxicity. |
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