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Hepatitis B is caused by a virus that attacks the liver. The virus, which is called hepatitis B virus (HBV), can cause lifelong infection, cirrhosis (scarring) of the liver, liver cancer, liver failure, and death.
HBsAg or Hepatitis B Surface Antigen will be detected in an infected person's blood on the average of 4 weeks (range 1-8 weeks) after exposure to the Hepatitis B virus.
About 1 out of 2 patients will no longer be infectious by 7 weeks after onset of symptoms and all patients, who do not remain chronically infected, will be HBsAg-negative by 15 weeks after onset of symptoms.
The Hepatitis B virus is a DNA virus, meaning that its genetic material is made up of deoxyribonucleic acids.
It belongs to a family of viruses known as Hepadnaviridae. The virus is primarily found in the liver but is also present in the blood and certain body fluids. Hepatitis B virus consists of a core particle (central portion) and a surrounding envelope (outer coat).
The core is made up of DNA and the core antigen (HBcAg). The envelope contains the surface antigen (HBsAg).
These antigens are present in the blood and are markers that are used in the diagnosis and evaluation of patients with suspected viral hepatitis.
Testing through the NHS or your GP can take up to 2 weeks and details will always stay on your medical records. Our service is 100% private and confidential.
How does Hepatitis B virus cause liver injury?
The Hepatitis B virus reproduces in liver cells, but the virus itself is not the direct cause of damage to the liver. Rather, the presence of the virus triggers an immune response from the body as the body tries to eliminate the virus and recover from the infection. This immune response causes inflammation and may seriously injure liver calls.
Therefore, there is a balance between the protective and destructive effects of the immune response to the Hepatitis B virus.
We send you an easy-to-use kit to collect your blood sample.
Post your sample to our lab in the prepaid envelope provided.
View results securely in your own personal dashboard.
Our tests are not a substitute for seeing your doctor, especially if you are suffering symptoms. Our doctors will interpret your results based on the information you have provided, but will not diagnose, consult or provide any treatment. You will be advised to see your doctor for any necessary follow-up action.
The hepatitis B surface antigen (HBsAg) is a protein on the surface of the hepatitis B virus, present in the blood during a hepatitis B virus infection. Checking for this surface antigen helps to identify acute and chronic HBV infections. Positive surface antigen meaning the virus is present and that the individual is infectious.
A positive result for HBsAg indicates active hepatitis B infection, this means that there is a risk you can spread the hepatitis B virus to others.
We will send you your Hepatitis B Surface Antigen finger-prick blood test sample collection kit which contains everything you need to take your blood sample in the comfort of your own home. If you are unsure about completing a finger-prick blood sample collection you will have the opportunity to select a clinic-based venous blood sample collection or choose to go our London laboratory during the checkout process.How to collect a finger-prick blood sample
Your Hepatitis B Surface Antigen test includes 1st class postage and packaging for you to send your blood sample directly to our laboratory for analysis. If you live in an area where you cannot rely on the post or you simply want to ensure that your sample arrives at the laboratory the following day, you may wish to send your blood sample guaranteed next day delivery for extra reassurance.
Your blood sample will be analysed at one of our chosen laboratories. You can be assured of fast, accurate results from one of our accredited independent providers of clinical diagnostic tests.
Our medical team will comment on out-of-range blood test results and give you follow-up advice where necessary. If you need it, a PDF copy of your Hepatitis B Surface Antigen test results can be downloaded for your doctor.
Once you have placed your order you can visit my.medichecks.com where you can manage your account, track your orders and view your Hepatitis B Surface Antigen test results.
Stay motivated by filling in your online health and lifestyle questionnaire and seeing how improvements in your lifestyle can influence your test results. Your medical and family history gives us vital information when interpreting your results.