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HelpTest Code LAB3601 Gliadin Antibody, IgG (Deamidated Gliadin Peptide - DPG)
Additional Codes:
GLIADIN IGG
Collection:
Specimen: Blood
Container: Serum Separator or Plain Red Top Tube
Volume: 5 mL; Minimum 2.5 mL
Pediatric Collection:
One Gold or Red microtainer filled to 600 uL.
Storage Instructions:
Specimen may be held overnight at Room Temperature. Refrigerate for storage beyond 12 hours. Serum may be stored for up to 7 days at 2-8C. For longer storage, serum must be frozen at -20 or colder.
Turnaround Time (TAT):
Same day as performed
Test Availability:
Performed Monday – Friday
Assay:
0.2 ml serum
Request Form:
Routine Laboratory Request Form
Send To:
UMC MAIN LABORATORY Specimen Receiving – EH319 Extension Hospital
Reference Interval:
| Range | Interpretation |
| < 15 U/mL | Negative |
|
> 15 U/mL |
Positive |
Interpretive Data:
This test detects specific IgG to deamidated gliadin peptide (DGP) and has a sensitivity for gluten sensitive enteropathy (celiac disease) of greater than 90% in patients with selective IgA deficiency. Antibodies to DPG decline when the patient is on a gluten free diet and increase when gluten is reintroduced in the diet. A definitive diagnosis of celiac disease should not be made on the findings of a single laboratory test.