Interferon Beta, IgG
NabFeron, Interferon Blocking Ab , Interferon-Beta, IgG, FOCUS #20358, EPIC: LAB6526, SOFT: XINTB
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)
- Specimens not collected and processed as indicated.
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.
Sent to Focus Diagnostics, San Juan Capistrano, CA.
Results available in 2-9 days.
Less than 4.0 Units.
Multi-Analyte Immunodetection (MAID).
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.
83520 (86382, if reflexed).
FOCUS #20358, EPIC: LAB6526, SOFT: XINTB
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This directory currently reflects information only for specimens collected and/or processed at the Farmington Hills,
Grosse Pointe, Royal Oak, and Troy campuses.