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Test Code
BLAC4
Test Name
Beta Lactoglobulin IgG4
CPT Codes
86001
Expected Turnaround Time
7 days
Clinical Utility
The clinical utility of foold specific IgG4 tests has not been clearly established. Physicians sometimes use allergen-specific IgG4 to evaluate patients prior to or during immunotherapy. These tests can be used in special clinical situations. This test should only be ordered by physicians who recognize the limitations of the test.
Specimen and Container Info

Specimen Type: Serum

Collection Container: Red Top, Plain

Desired Specimen Volume: 0.5 mL
Collection Instructions
  1. Collect a red top tube, plain via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells.
  2. Transfer 0.5 mL of serum to a clear aliquot tube (screw cap).
Transport Instructions

Transport to the laboratory refrigerated. 
Stability Requirements

Room Temperature

 7 days

Refrigerated

 28 days

Frozen

 28 days
Methodology
Enzyme Immunoassay
Reference Intervals

 See patient report.
Reference Lab
Viracor Eurofins
Testing Schedule
Varies
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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