Helicobacter pylori Antibody, IgG
Label Mnemonic: HELI
Epic Lab Code: LAB158
Downtime Form: A-1a Miscellaneous Request
Chemistry
6240 RCP
356-3527
Specimen(s):
Serum
Collection Medium:
Red top tube 5 mL (Clot Activator)
Minimum:
0.5 mL serum
Testing Schedule:
Batch analysis on Monday and Thursday.
Turn Around Time:
Analysis performed Monday and Thursday.
Reference Range:
<0.75: Negative - No significant level of IgG antibody to H. pylori detected.
0.75-0.99: Equivocal - Repeat testing in 10-14 days may be helpful.
≥1.00: Positive - IgG antibody to H. pylori detected, suggestive of previous exposure or active infection.
Interpretive Data:
Previously known as Campylobacter pylori, Helicobacter pylori-specific antibodies are detectable in almost all adult patients with duodenal ulcer and about 80% of patients with gastric ulcer. The prevalence of H. pylori antibodies increases with age and can be found in a significant percentage of healthy individuals over the age of 50. Positive results do not confirm the diagnosis of H. pylori-associated gastritis or duodenal ulcer, but negative results are strong evidence against these diagnoses.
Methodology:
Enzyme Linked Fluorescent Assay (ELFA)
CPT Code:
86677