H. pylori Antibodies (IgG)
Private H. pylori IgG blood testing in London for £105.99, measuring one antibody marker with laboratory results expected in around 1 day.
Turnaround time
1 business day
Biomarkers count
1
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Overview of the H. pylori Antibodies (IgG) Test
The H. pylori Antibodies (IgG) blood test detects Immunoglobulin G antibodies produced following exposure to Helicobacter pylori.
The test contains 1 biomarker: H. pylori Antibodies (IgG).
Helicobacter pylori is a bacterium that can colonise the stomach lining and cause chronic gastritis.
It is associated with peptic ulcer disease and several other gastric conditions.
Following infection, the immune system produces antibodies against H. pylori.
IgG antibodies often remain detectable for a prolonged period and can persist even after the infection has been successfully treated.
This means the test is useful for identifying evidence of exposure, but it has an important limitation: a positive result does not reliably distinguish active infection from previous infection.
For this reason, H. pylori IgG is not generally the preferred method for confirming successful eradication after treatment.
Where the clinical question is whether H. pylori is currently present, a stool antigen test or Urea Breath Test is generally more suitable.
The blood test can nevertheless be useful where stool or breath testing is unsuitable or unavailable, or where serological evidence of exposure is being investigated.
A negative result reduces the likelihood of previous H. pylori exposure, but very early infection or variation in immune response can affect antibody detection.
Results should therefore be interpreted alongside symptoms, previous treatment and any active-infection testing.
What Does the H. pylori Antibodies (IgG) Test Check?
The test looks for IgG antibodies produced by the immune system after exposure to H. pylori rather than detecting the bacterium directly. This test measures 1 biomarker.
H. pylori Antibodies (IgG)
Detects IgG antibodies generated following exposure to Helicobacter pylori and provides evidence of previous or potentially current infection.
Who May Benefit From the H. pylori Antibodies (IgG) Test?
IgG testing may be useful where evidence of H. pylori exposure is required and active-infection testing is not immediately available or practical.
People with persistent upper abdominal discomfort - H. pylori exposure may be relevant where chronic gastritis or ulcer disease is being considered.
People with a history of peptic ulcer disease - H. pylori is an important underlying cause of gastric and duodenal ulcers.
People with chronic dyspepsia - Serology may contribute to investigation, although active-infection testing is often preferred.
People unable to provide a stool specimen - Blood antibody testing offers an alternative way to assess exposure.
People with previous H. pylori infection where historical exposure is relevant - IgG may remain detectable after treatment.
People with unexplained Iron-deficiency anaemia where gastric causes are being investigated - H. pylori can sometimes be considered within the wider work-up.
People with a previous uncertain H. pylori result - Serology may provide supplementary information alongside other tests.
People specifically advised to obtain H. pylori antibody testing - The result can be useful when interpreted within a defined clinical pathway.
How to Prepare
Do not use a positive IgG result by itself to decide whether eradication treatment is required.
Where current infection needs to be established, an active-infection test is generally more informative.
Symptoms and Reasons to Consider the H. pylori Antibodies (IgG) Test
Symptoms of H. pylori infection are variable and can overlap with many other upper gastrointestinal conditions.
Persistent upper abdominal discomfort - Chronic gastritis can cause epigastric pain or discomfort.
Burning or gnawing stomach pain - Peptic ulcer disease can produce characteristic upper abdominal symptoms.
Persistent indigestion - Dyspepsia can occur with H. pylori-associated gastritis.
Nausea - Gastric inflammation can contribute to nausea.
Bloating or early fullness - These symptoms may accompany chronic dyspepsia.
A history of gastric or duodenal ulcers - H. pylori exposure is clinically relevant in ulcer disease.
Unexplained Iron deficiency with gastrointestinal concerns - H. pylori may be one factor considered during investigation.
A previous H. pylori diagnosis with uncertain historical records - IgG may provide evidence of prior exposure.
These symptoms are not specific to H. pylori.
Vomiting blood, black stools, persistent vomiting, progressive difficulty swallowing, significant unexplained weight loss or severe persistent abdominal pain requires medical assessment.
How to Book Your H. pylori Antibodies (IgG) Test
The H. pylori Antibodies (IgG) blood test can be booked privately when serological evidence of exposure is required.
Choose the H. pylori Antibodies (IgG)
Select the individual H. pylori IgG blood test online.
Select your sample collection option
Choose an in-clinic blood draw or professional home or hotel phlebotomy depending on location and availability.
Attend your appointment
A trained healthcare professional collects the required venous blood sample.
Laboratory analysis
Your serum is analysed for H. pylori-specific IgG antibodies.
Receive your results securely
Your authorised result is delivered securely and can be interpreted alongside symptoms and active-infection testing where appropriate.
When Will I Receive My Results?
The current expected turnaround for H. pylori Antibodies (IgG) is approximately 1 business day after laboratory receipt.
The test is an established serological assay and can generally be processed quickly.
The laboratory performs antibody analysis, quality-control procedures and result authorisation before release.
Turnaround begins from laboratory receipt rather than necessarily from the exact time your blood is collected.
If further H. pylori testing is required to establish whether infection is active, the additional test will have its own turnaround period.
Understanding Your Results
A negative H. pylori IgG result means antibodies were not detected at the assay threshold.
This reduces the likelihood of previous exposure, although no antibody test is perfect.
A positive result demonstrates an immune response to H. pylori.
It may reflect current infection, previous infection or infection that has already been successfully treated.
For this reason, a positive IgG result should not automatically be interpreted as active H. pylori infection.
IgG levels can remain detectable for months or years after treatment.
Where determining current infection matters, stool antigen or Urea Breath Testing is generally more appropriate.
The antibody result should therefore be considered with treatment history, symptoms and other gastrointestinal investigations.
Why Book With London Blood Tests?
London Blood Tests provides private H. pylori serology for people requiring a straightforward blood-based assessment of previous exposure.
Simple blood-based testing - No stool specimen is required.
Measures H. pylori IgG directly - Provides evidence of an immune response to the organism.
Useful when stool testing is unsuitable - Offers an alternative method of assessing exposure.
Relevant to ulcer and gastritis investigations - H. pylori is strongly associated with several gastric conditions.
Fast results - Current turnaround is approximately 1 business day.
Professional phlebotomy - Clinic and suitable mobile collection options are available.
Secure reporting - Receive your authorised result confidentially.
Clear pricing - The H. pylori Antibodies (IgG) test costs £105.99.
Private H. pylori Antibodies (IgG) Blood Test in London
London Blood Tests provides private H. pylori IgG blood testing for people seeking evidence of previous or potential current Helicobacter pylori exposure.
The test costs £105.99 and measures 1 biomarker.
Results are expected approximately 1 business day after laboratory receipt.
Because IgG can remain positive following successful treatment, the test should not be used alone to confirm active infection or eradication.