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H. pylori Antibodies (IgG)
105.99
The H. pylori IgG test detects antibodies to Helicobacter pylori. It helps identify previous or ongoing exposure linked to stomach conditions.
Turnaround time
1 day
Biomarkers count
1
Same-Day Appointments
UKAS Accredited Labs
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Under 18? Patients under 18 can only be seen at GB Medlabs and Clinilabs, Monday to Friday only.
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Details about H. pylori Antibodies (IgG)
What is the H. pylori Antibodies (IgG) test?
The H. pylori Antibodies (IgG) test is a blood test that measures Immunoglobulin G (IgG) antibodies produced in response to infection with Helicobacter pylori, a bacterium that colonises the stomach lining.
H. pylori is one of the most common chronic bacterial infections worldwide and is strongly associated with gastritis, peptic ulcers, and increased risk of gastric cancer. IgG antibodies usually develop after exposure and can remain detectable for months or years.
This test is mainly used to identify past or current exposure to H. pylori, especially when symptoms suggest chronic infection.
Why do I need an H. pylori IgG test?
H. pylori infection often causes long-term stomach inflammation and may be asymptomatic for years. Testing helps identify whether symptoms may be related to H. pylori exposure.
You may need this test if you:
- Have persistent upper abdominal pain
- Experience bloating, nausea or indigestion
- Have recurrent heartburn or reflux
- Have a history of gastric or duodenal ulcers
- Have unexplained iron-deficiency anaemia
- Have a family history of stomach cancer
- Need assessment when stool or breath tests are unavailable
Symptoms commonly associated with H. pylori include:
- Burning or gnawing stomach pain
- Nausea
- Loss of appetite
- Bloating
- Early satiety
- Unexplained weight loss
Benefits of the H. pylori Antibodies (IgG) test
- Identifies exposure to H. pylori
Detects immune response to infection. - Supports investigation of chronic gastric symptoms
Useful in long-standing digestive complaints. - Simple blood test
No stool or breath sample required. - Clinically recognised screening marker
Widely used in gastrointestinal assessment. - Useful when other tests are unavailable
Alternative diagnostic approach. - Helps guide further testing
Indicates need for confirmatory tests. - Relevant for ulcer risk assessment
H. pylori is a major ulcer risk factor. - Suitable for adults and older patients
Commonly used in primary and specialist care.
Step by step – how the test works
You can access H. pylori IgG testing UK-wide through two options:
- Clinic appointment
Attend your nearest UK clinic where a healthcare professional will take your blood sample. - At-home or hotel visit (£60 extra)
A qualified phlebotomist comes to your home or hotel, so you don’t need to travel.
Your sample is analysed in an accredited UK laboratory, and results are delivered securely.
Your results explained
Negative H. pylori IgG
Suggests no evidence of previous exposure or infection.
Typical UK interpretation:
- IgG: Negative
Positive H. pylori IgG
Indicates past or current exposure to H. pylori. Further testing may be needed to confirm active infection.
Typical UK interpretation:
- IgG: Positive
Clinical interpretation required
IgG antibodies can remain positive after treatment, so results must be interpreted alongside symptoms and other tests.
How It Works
Simple steps to get your results
1
Book Online
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
2
Visit or Test at Home
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
3
Get Your Results
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsHow to Prepare for Your Test
Follow these guidelines for accurate results
Sample Timing
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting & Hydration
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Medications & Supplements
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
Hormones & Menstrual Cycle
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.
Frequently Asked Questions
No. It shows exposure, not necessarily active infection.
Stool antigen or urea breath tests.
No. IgG may remain positive after treatment.
No fasting is required.
It is not used to confirm eradication.
Yes. It is a major cause of peptic ulcers.
Yes, when clinically indicated.
Only mild discomfort from a blood draw.
Yes. Home or hotel phlebotomy is available UK-wide for £60 extra.
Yes. Further investigation may be required.
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