800-551-0488

Lab results are too important to go anywhere else

Beaumont Laboratory

Interferon Beta, IgG

NabFeron, Interferon Blocking Ab , Interferon-Beta, IgG, FOCUS #20358, EPIC: LAB6526, SOFT: XINTB

Instructions

Collect specimen at least 8 hours after Interferon injection. The specific drug being used to treat the patient must be provided with the patient requisition (i.e. Avonex, Rebif, Betaseron).

Specimen Collection Criteria

Collect (preferred specimen): One Gold-top SST tube.
Also acceptable: One plain Red-top tube.

Physician Office/Drawsite Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 1.5 mL serum, refrigerated (2-8°C or 36-46°F). (Min: 0.5 mL)

Rejection Criteria

  • Specimens not collected and processed as indicated.

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 7 days
Refrigerated (2-8°C or 36-46°F): 14 days
Frozen (-20°C/-4°F or below): 30 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Sendout Laboratory with any questions.

Laboratory

Sent to Focus Diagnostics, San Juan Capistrano, CA.

Performed

Tuesday.
Results available in 2-9 days.

Reference Range

Less than 4.0 Units.

Test Methodology

Multi-Analyte Immunodetection (MAID).

Clinical Utility

Some multiple sclerosis patients receiving recombinant interferon-beta (IFNb) develop IFNb-specific antibodies that may block the therapeutic effect of the treatment. This assay screens for IgG antibodies capable of binding to IFNb; all samples with detectable IFNb binding antibodies will reflex to Interferon-beta Neutralization Assay (Focus Unit Code 20468) for an additional charge.

CPT Code

83520 (86382, if reflexed).

Test Codes

FOCUS #20358, EPIC: LAB6526, SOFT: XINTB

Last Updated

10/13/2016

Microtainer® and Vacutainer® are registered trademarks of Becton, Dickinson and Company.
UroVysion® is a registered trademark of Abbott Laboratories. ThinPrep® is a registered trademark of Hologic, Incorporated.

This directory currently reflects information only for specimens collected and/or processed at the Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.