What is hepatitis B surface antigen?
Hepatitis B surface antigen (HBsAg): A protein on the surface of hepatitis B virus; it can be detected in high levels in serum during acute or chronic hepatitis B virus infection. The presence of HBsAg indicates that the person is infectious.
What does it mean if your hepatitis B surface antibody is positive?
Hepatitis B Surface Antigen (HBsAg) – The “surface antigen” is a protein found on the surface of the hepatitis B virus that is present in the blood of someone who is infected. If this test is positive or “reactive,” then the hepatitis B virus is present.
What causes hepatitis B surface antigen?
Causes. The Hepatitis B virus is passed from person to person through blood, semen, or other body fluids. Sexual contact: You may become infected if you have unprotected sex with an infected partner whose blood, saliva, semen, or vaginal secretions enter your body.
What is the difference between hepatitis B surface antibody and antigen?
HBsAg: Hepatitis B surface antigen is a marker of current infection. Its presence indicates either acute or chronic HBV infection. Anti-HBs: Antibody to hepatitis B surface antigen is a marker of immunity.
What is the normal range for hepatitis B surface antigen?
For example, a hepatitis B surface antigen (HBsAg) level of less than 1 s/c is considered negative, while a level of more than 5 s/c is considered positive. Any value between 1 and 5 s/c is indeterminate and should be repeated.
What is the normal range for hepatitis B surface antibody?
The ranges for hepatitis B surface antibodies are: Anti-HBs greater than 10-12 mIU/mL: Protected against hepatitis B virus (HBV) infection, either from vaccination or successful recovery from a previous HBV infection.
What is hepatitis B surface antigen negative?
A Word From Verywell. If all of your hepatitis tests are negative, it indicates that you have not been exposed to the virus and are not immune. If this is the case, talk to your healthcare provider about getting vaccinated whether or not you are at risk of hepatitis B.
Is it good to have hepatitis B antibodies?
If this test is positive or “reactive,” then your immune system has successfully developed a protective antibody against the hepatitis B virus. This will provide long-term protection against future hepatitis B infection. Someone who is HBsAb+ is not infected and cannot pass the virus to others.
What is hepatitis B surface antibody negative?
Normal results are negative or nonreactive, meaning that no hepatitis B surface antigen was found. If your test is positive or reactive, it may mean you are actively infected with HBV. In most cases this means that you will recover within 6 months.
Can I pass hepatitis B to my partner?
Anyone who lives with or is close to someone who has been diagnosed with chronic Hepatitis B should get tested. Hepatitis B can be a serious illness, and the virus can be spread from an infected person to other family and household members, caregivers, and sexual partners.
Can I donate blood if I have hepatitis B antibodies?
No. The blood bank will not accept any blood that has been exposed to hepatitis B, even if you have recovered from an acute or chronic infection.
Should I worry if I have hepatitis B?
All patients with chronic hepatitis B infections, including children and adults, should be monitored regularly since they are at increased risk for developing cirrhosis, liver failure, or liver cancer. You should make an appointment with a hepatologist (liver specialist) or gastroenterologist familiar with hepatitis B.
How long can I live with hepatitis B?
Most people chronically infected with hepatitis B can expect to live long and healthy lives. Individuals with chronic HBV may not develop symptoms for up to 30 years. Damage to the liver can silently occur during this time.