IgG4 Food Panel VIII

Label Mnemonic:	FG4FP
Epic code:	LAB8742
Downtime form:	A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery

Commercial Mailout Laboratory
6240-8 RCP
356-8593

Specimen(s):

Serum

Collection Medium:

Red top tube 5 mL (Clot Activator)

Minimum:

Preferred Minimum: 1.5 mL serum in red top tube
Absolute Minimum: 1 mL serum in red top tube

Rejection Criteria:

Serum gel tube

Testing Schedule:

Monday through Friday

Turn Around Time:

2 - 3 days upon receipt at reference laboratory

Reference Range:

Corn IgG4            <0.15 mcg/mL
Egg White IgG4       <0.15 mcg/mL
Milk Cow IgG4        <0.15 mcg/mL
Peanut IgG4          <0.15 mcg/mL
Soybean IgG4         <0.15 mcg/mL
Wheat IgG4           <0.15 mcg/mL

The reference range listed on the report is the lower limit of 
quantitation for the assay. The clinical utility of food-specific IgG4 
tests has not been established. These tests can be used in special 
clinical situations to select foods for evaluation by diet elimination 
and challenge in patients who have food-related complaints. It should 
be recognized that the presence of food-specific IgG4 alone cannot be 
taken as evidence of food allergy and only indicates immunologic 
sensitization by the food allergen in question. This test should only 
be ordered by physicians who recognize the limitations of the 
test.

Interpretive Data:

Lower Limit of Quantitation - 0.15 mcg/mL of IgG
Upper Limit of Quantitation - 30.0mcg/mL of IgG

Methodology:

ImmunoCAP FEIA

CPT Code:

86001 x 6