Lab Test Dictionary

Infliximab Quantitation with Reflex to Antibodies to Infliximab, Serum (INFXR)

Methodology

LC-MS/MS; Electrochemiluminescent Bridging Immunoassay

Synonyms

Remicade, Janssen Biotech; Anti-TNF Inhibitor; Inflectra, Pfizer, Inc; IFX; HACA; Anti-Chimeric Ab; IFD; Anti-TNF-alpha Drug

Specimen Type

Serum

Performing Lab

Mayo Medical Lab

Epic ID

LAB08088

Standard TAT

3-6 Days

Collection Information

Specimen Required

1-2 mL Blood

Container Type

Red Top (No Additive)

Collection Instructions

For 12 hours before this test do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins. Draw blood immediately before next schedule dose (trough specimen).

Processing Information - Lab Use Only

Transport Temperature

Refrigerate-OK/Frozen-OK

Specimen Stability

Room Temp: Unacceptable; Refrigerated: 28 Days; Frozen: 28 Days (Preferred)

Rejection Criteria

Gross hemolysis; Gross icterus; Plasma; Whole blood; Serum separator tube (SST)

Test Volume Required

1 mL Serum

Minimum Test Volume

0.5 mL Serum

Processing Instructions

Separate serum within 2 hours of collection. Order in Mayolink and send with Mayo courier Monday-Friday.