Hepatitis B Core IgM
Private Hepatitis B Core IgM blood test in London for £68, supporting assessment of recent or acute Hepatitis B infection.
Turnaround time
5 business days
Biomarkers count
1
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Overview of the Hepatitis B Core IgM Test
The Hepatitis B Core IgM blood test measures IgM antibodies directed against the core antigen of Hepatitis B Virus.
The test contains 1 biomarker: Hepatitis B Core Antibody - IgM.
IgM antibody to Hepatitis B core antigen, commonly abbreviated to IgM anti-HBc, is an important marker of recent or acute Hepatitis B infection.
Unlike Hepatitis B Surface Antibody, core antibodies are not produced simply as a result of Hepatitis B vaccination.
A positive IgM anti-HBc result therefore indicates an immune response to actual viral infection rather than vaccine-induced immunity.
IgM anti-HBc is particularly useful when determining whether a Hepatitis B infection is acute or recently acquired.
It can also remain detectable during the resolving phase of acute infection.
During the so-called serological window period, Hepatitis B Surface Antigen may have disappeared while Hepatitis B Surface Antibody has not yet become detectable. IgM anti-HBc can be especially useful during this phase.
There is an important qualification: IgM anti-HBc can occasionally become positive during a severe flare or reactivation of chronic Hepatitis B.
The test should therefore not be interpreted in isolation.
HBsAg, Total Hepatitis B Core Antibody, Hepatitis B Surface Antibody and, where appropriate, HBV DNA provide additional information about infection stage, immunity and viral replication.
A positive result requires clinical follow-up because acute Hepatitis B can range from asymptomatic infection to significant hepatitis.
What Does the Hepatitis B Core IgM Test Check?
The test detects the early IgM immune response to the Hepatitis B core antigen and is principally used when recent or acute infection is suspected. This test measures 1 biomarker.
Hepatitis B Core Antibody - IgM
Detects IgM antibodies to the Hepatitis B core antigen, an important marker of recent or acute HBV infection that can also appear during selected chronic HBV flares.
Who May Benefit From the Hepatitis B Core IgM Test?
The test is most useful when acute Hepatitis B is a genuine clinical concern or when other HBV markers need clarification.
People with symptoms of acute viral hepatitis - IgM anti-HBc can help determine whether Hepatitis B is recently acquired.
People with a newly positive Hepatitis B Surface Antigen - Core IgM helps differentiate acute infection from established chronic infection.
People with recent blood or sexual exposure to Hepatitis B - Testing may form part of a wider HBV diagnostic pathway.
People with unexplained jaundice and abnormal liver markers - Acute Hepatitis B is one possible cause.
People with an unusual Hepatitis B serology pattern - IgM anti-HBc can help clarify a possible resolving infection or window period.
People with chronic Hepatitis B experiencing a significant flare - IgM anti-HBc can occasionally become detectable during severe reactivation.
People specifically advised to undergo acute Hepatitis B assessment - The marker is most useful when combined with other HBV serology.
How to Prepare
Do not delay clinical assessment of significant hepatitis symptoms while waiting for specialist serology.
If exposure was very recent, additional testing or repeat testing may be recommended according to timing.
Symptoms and Reasons to Consider the Hepatitis B Core IgM Test
Acute Hepatitis B can be asymptomatic or produce symptoms similar to other forms of viral hepatitis.
Marked fatigue after a recent relevant exposure - Acute viral hepatitis can cause significant systemic tiredness.
Loss of appetite - Appetite reduction can occur during acute liver inflammation.
Nausea or vomiting - Gastrointestinal symptoms are common in symptomatic hepatitis.
Right upper abdominal discomfort - Liver inflammation can cause discomfort beneath the right ribs.
Dark urine - Increased Bilirubin can cause urine to become dark.
Pale stools - Disturbed bile handling can alter stool colour.
Jaundice - Yellowing of the skin or eyes is an important symptom of acute hepatitis.
A recent blood or sexual exposure to Hepatitis B - Laboratory testing is important because infection may also occur without symptoms.
Jaundice, persistent vomiting, confusion, severe abdominal symptoms or evidence of acute liver failure requires prompt medical assessment.
A single Hepatitis B marker should not be used alone to stage infection.
How to Book Your Hepatitis B Core IgM Test
The Hepatitis B Core IgM test can be booked privately when recent or acute HBV infection requires investigation.
Choose the Hepatitis B Core IgM
Select the individual Hepatitis B Core IgM blood test online.
Select your sample collection option
Choose an in-clinic blood draw or professional home or hotel phlebotomy where appropriate.
Attend your appointment
A trained healthcare professional collects the required venous blood sample.
Laboratory analysis
Your serum is analysed for Hepatitis B Core Antibody IgM.
Receive your results securely
Your authorised result is delivered securely and can be interpreted alongside other Hepatitis B markers.
When Will I Receive My Results?
The current London Blood Tests turnaround for Hepatitis B Core IgM is approximately 5 days after laboratory receipt.
The test is a specialist viral serology investigation assessing the IgM response to Hepatitis B core antigen.
The sample undergoes laboratory analysis, quality-control checks and result authorisation.
Turnaround begins when the specimen reaches the laboratory rather than necessarily on the date of collection.
Where a result suggests acute infection, additional Hepatitis B serology, viral-load testing or liver assessment may be required and will have separate turnaround times.
Understanding Your Results
A negative result means IgM antibodies to Hepatitis B core antigen were not detected at the assay threshold.
This makes acute recent Hepatitis B less likely but should be interpreted with the timing of exposure and other HBV markers.
A positive result strongly supports recent or acute HBV infection in the appropriate clinical context.
IgM anti-HBc is generally associated with infection acquired within the preceding months.
However, it can occasionally become positive during a significant chronic-HBV flare or reactivation.
Interpretation is therefore strongest when combined with Hepatitis B Surface Antigen, Total Core Antibody, Surface Antibody and HBV DNA where indicated.
Vaccination does not produce anti-HBc, so a positive core antibody reflects viral exposure rather than vaccination alone.
Why Book With London Blood Tests?
London Blood Tests provides private access to this important acute-Hepatitis B marker with confidential laboratory reporting.
Important acute HBV marker - IgM anti-HBc is strongly associated with recent Hepatitis B infection.
Not produced by vaccination - Helps distinguish actual HBV exposure from vaccine-induced immunity.
Useful during the HBV window period - Can remain detectable when other markers are temporarily less informative.
Complements wider Hepatitis B testing - Can be interpreted alongside HBsAg, anti-HBs and Total anti-HBc.
Private confidential testing - Results are handled securely.
Professional blood collection - Clinic and suitable mobile phlebotomy are available.
Specialist virology analysis - Samples undergo laboratory antibody testing.
Clear pricing - Hepatitis B Core IgM costs £68.
Private Hepatitis B Core IgM Blood Test in London
London Blood Tests provides private Hepatitis B Core IgM testing for people requiring assessment of recent or acute HBV infection.
The test costs £68 and measures 1 biomarker.
The current London Blood Tests turnaround is approximately 5 days after laboratory receipt.
The result should be interpreted as part of the wider Hepatitis B serological pattern rather than in isolation.