INTBG – “Interferon-Beta IgG, MAID” replaced by IFNBA – “NAbFeron (INFB-1) Neutralizing Antibody Test”

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Inactivated/Replace Test

Effective Date

11/28/2022

Included in Report

WML Test Directory Update | November 2022

Replacement Test

NAbFeron® (INFB-1) Neutralizing Antibody Test

Notes

QSJC 38007 – replacing Focus 38903

Inactivated Test Details

Mnemonic

INTBG

Ordering Code

3512660

CPT-4 Codes(s)

83516 If Interferon - beta is positive, Nab Feron® Neutralizing Antibody Test will be added at an additional charge (86382)

Replacement Test Details

Mnemonic

IFNBA

Ordering Code

3400713

CPT-4 Codes(s)

86382

Turnaround Time
16 - 23 days Performing
Performed
Tuesday
Legacy Code
IFNBA
Example Report
Download

Specimen Information

Patient Preparation

Sample needs to be collected either before treatment with interferon or more than 24 hours
following the most recent does. Patient should not be on steroid therapy for at least two weeks
prior to testing.

Collect

Serum separator tube (SST)

Specimen Preparation

Centrifuge, separate serum from cells and send 2.0 mL serum in screw capped plastic vial.
Please label each specimen tube with two forms of patient identification. These forms of
identification must also appear on the test requisition form.

Alternate Specimen

No alternate specimens.

Minimum Volume

0.5 mL

Transport Temperature

Refrigerated

Stability

Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 6 months

Methodology

Viral Cytopathic Effect Assay
more

Reference Range

Not elevated: <1:20
Mild/Moderate Elevated: 1:20 - 1:100
Highly Elevated: >1:100
more

Performing Laboratory

Quest SJC performed at Athena Diagnostics, Inc.
more

Interface Map for IFNBA

Test Name Ordering Code Result Code Component Name LOINC Code AOE Prompt Units
NAbFeron® (INFB-1) Neutralizing Antibody Test3400713
3400714Interpretation50398-7No
3400715Methods49549-9No
3400716Comments8251-1No
3400717References8265-1No
3400718Technical Results19146-0No

The CPT codes provided are for general informational purposes only and are based on an interpretation of AMA guidance. It is the sole responsibility of the billing party to determine CPT codes. Any questions regarding coding should be directed to the paying party.

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