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Helicobacter pylori Antibody, Serologic Test (Qualitative)

Published: August 9, 2026Updated: August 16, 2026

This test checks for antibodies to *Helicobacter pylori*, a bacteria linked to stomach issues like ulcers or inflammation. It helps determine if you’ve been exposed to the bacteria.

Quick summary

["This test helps identify past or current infection by *Helicobacter pylori*, which may affect your stomach health."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
6419-6
Short code
H pylori Ab Ser Ql IF
Synonyms
H pylori Ab Ser Ql IF
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your doctor may recommend this test if you have symptoms like stomach pain, nausea, or unexplained weight loss. It’s also used when diagnosing conditions like gastritis or stomach ulcers caused by *H. pylori*.

What to Expect Before the Test

No special preparation is needed. A blood sample is taken from a vein in your arm. The test is usually done in a lab setting.

How the Test Works

The test detects antibodies in your blood that your immune system produces in response to *H. pylori*. These antibodies indicate past or current infection, though they don’t always mean active symptoms.

What the Results Mean

A positive result suggests you’ve been exposed to *H. pylori* at some point. A negative result means you likely haven’t been exposed recently, but it doesn’t rule out past infection.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

H. pylori Antibody Screen

Frequently asked questions

What does a positive result mean?
A positive result means your body has detected antibodies to *H. pylori*, indicating past or possible current infection. This doesn’t always mean you’re experiencing symptoms, but it may prompt further evaluation or treatment.
Can I get this test at home?
No, this test requires a blood sample collected in a clinical setting by a healthcare provider.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy