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Antigliadin IgA Antibody
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
Test Code
GLIIGA
Alias/See Also
74221
CPT Codes
86258
Preferred Specimen
1 mL serum (minimum 0.5 mL)
Instructions
SST or Red top: Avoid hemolysis. Invert a minimum of 5 times, then allow to clot in an upright position for 30 minutes. Centrifuge the the tube for at least 10 minutes. Keep tightly stoppered.
Transport Container
SST (speckled top), Red top , Plastic Vial (transfer) tube
Transport Temperature
Refrigerated (preferred)
Specimen Stability
Room Temperature = n/a
Refrigerated = 5 days
Frozen = at least 7 days
Refrigerated = 5 days
Frozen = at least 7 days
Methodology
EIA
Setup Schedule
Monday, Wednesday, Friday
BS
BS
Report Available
3 days
Reference Range
SEX | AGE | Report Normals | Units |
N/M/F | 1000Y | < 20 = Negative | No detectable antibody by the ELISA test |
20 - 30 = Positive | Weak Positive | ||
> 30 = Positive | Moderate - Strong Positive |
Clinical Significance
Antigliadin antibody (AGA) is present in the serum of patients with Celiac Disease (or Sprue) which is a hypersensitivity to gluten in the diet (wheat). There are two types of antibodies that may be measures: IgA and IgG. IgA antibody is the most specific for Celiac Disease. However, a relatively high percentage of patients with this disease also have an IgA deficiency. In these patients, the IgG antibody can be helpful in helping diagnose the disease.
Performing Laboratory
CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine, OH 45439
Last Updated: January 19, 2022