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TACROLIMUS (FK 506)

Test Code
FK506
 
SynonymsTacrolimus; Prograf
SPECIMEN REQUIREMENTS
Container TypeLavender top tube (EDTA)
Supply Item Numberpicture1222
Specimen TypeWhole blood
Preferred Volume1 mL
Minimum Volume0.5 mL
Collection ProcedureDraw specimen 30 minutes before the next dose.
Store and TransportRefrigerated
StabilityRoom Temp 1 day  Refrigerated 1 week  Frozen (-20 °C) 6 months  
LimitationsAvoid repeat freeze/thaw cycles
CPT Codes80197
Billing CodeFK506
Test ScheduleSun-Sat days; Mon-Fri evenings
Turnaround Time1-2 days
MethodCMIA
Reference Ranges
TitleRangesUnits
FK 506No established reference rangeng/mL
Therapeutic range for Tacrolimus not clearly defined. Target 12 hour trough whole blood concentrations are 5 to 20 ng/mL early post transplant. Higher concentrations show an increased incidence of adverse effects.

Interface Codes
typeorder codetest descriptionresult coderesult descriptionunitsdecimal placesloinc code
o80299.Z23FK 506
r80299.Z23FK 50680299.Z23FK 506ng/mL111253-2

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