Infliximab

Diagnostic Use

Infliximab (also known as Remicade) drug level
Anti-drug antibodies are measured when drug levels are low (<2mg/L)

Delphic Registration Code

INFX

Laboratory Handling

Phlebotomy

Serum samples should be taken from patients receiving TNF Biologics for at least 10 weeks. Samples should be taken at drug trough, within the 24 hours prior to a dose.

Registration

Register as INFX; Register as TNF if uncertain and Immunology will identify which specific drug to test.

Synonyms

Infliximab
Remicade
Infliximab antibodies

Turnaround Time

3 weeks

Test Code

INFX

Specimen Type

• Serum

Specimen Requirements

Tube/Container Type:

Preferred

• Serum (Red Cap)

Preferred if West Coast

• SST II (Gold Cap)

Acceptable

• SST II (Gold Cap)

Preferred Sample Volume (ml)

1

Paediatric Specimen Requirements

Tube/Container Type:

Preferred

• Serum (Red Cap)

Acceptable

• SST II (Gold Cap)

Preferred Sample Volume (ml)

0.5

Pre-testing Requirements

Serum samples should be taken from patients receiving TNF Biologics for at least 10 weeks.
Samples should be taken at drug trough, within the 24 hours prior to a dose.
Please indicate on the request form the last dose date.

Aliquot Instructions

Sample Type

• Serum

Transport to Lab

Ambient (8 - 24 degrees Celsius)
Chilled (2 - 8 degrees Celsius)

Additional Referral/Aliquot Information

200uL serum (minimum), 1 mL serum (preferred)

Interpretation

Units: mg/L

Reference Intervals

Trough concentrations below 7mg/L using this assay have been associated with reduced control in inflammatory bowel disease (Barclay et al. Proc. NZ Soc. Gastroenterology ASM, 2014).

Test Method

HMSA/HPLC

Non-Funded Test Cost

$92.02 (Exclusive of GST)

Billing Code

5851

Additional Costing Information

An additional charge will apply for anti-drug antibody testing.

Contact Information

Enquiry Form