Test directory: Infliximab Reflex to Infliximab Ab

Ordering Code7785
Test NameInfliximab Reflex to Infliximab Ab
AliasInfliximab Quantitation with Reflex to Antibodies to
Infliximab, Serum
Anti-TNF Inhibitor
Anti-Infliximab antibodies
Preferred SpecimenSerum
Preferred ContainerPlain (Red)
Optimum Volume1.5 mL
Collection InstructionsDraw blood immediately before next scheduled dose (trough specimen)

For 12 hours before specimen collection do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair,skin, and nail supplements and multivitamins

When infliximab results are below 5.1 mcg/mL, testing for antibodies to infliximab will be performed.
Handling InstructionsCentrifuge and separate within 2 hours of collection.
Transport RequirementsOahu: Refrigerated
Airline: Frozen
Specimen StabilityAmbient: Not Stable
Refrigerated: 28 Days
Frozen: 28 Days
Rejection CriteriaGel barrier tube, Grossly hemolyzed, Gross icterus
Avail. StatNO
Analytic Time10 Days
MethodologyINFXR, INFX: Selective Reaction Monitoring Liquid
Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reference Lab Mayo Medical Lab

Reference range(s)

ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Infliximab, SALLmcg/mLSee report.
InterpretationALLSee report.