Living With Celiac Disease: Management and Monitoring

Hepatitis B is a viral infection that affects the liver and can cause both acute and chronic disease. The hepatitis B virus is transmitted through contact with infected blood or body fluids, including through unprotected sexual contact, sharing needles, or from mother to child during childbirth. Many people with hepatitis B may not experience symptoms initially, making laboratory testing essential for diagnosis and monitoring.

Laboratory tests for hepatitis B include several markers that help determine if a person has an active infection, has recovered from a past infection, or has been successfully vaccinated. The hepatitis B surface antigen test, known as HBsAg, is the primary screening test used to detect active infection. If this test is positive, it indicates that the virus is present in the blood. Additional tests include the hepatitis B surface antibody test, which shows immunity either from vaccination or recovery from infection, and the hepatitis B core antibody test, which indicates past or current infection.

For people diagnosed with hepatitis B, regular monitoring through laboratory tests is important to assess liver function and viral activity. Liver function tests measure enzymes and proteins in the blood that indicate how well the liver is working. The hepatitis B viral load test measures the amount of virus in the blood and helps doctors determine the severity of infection and whether antiviral treatment is needed. These tests are typically performed at regular intervals to track disease progression and treatment response.

Healthcare providers recommend hepatitis B testing for certain groups at higher risk, including healthcare workers, people with multiple sexual partners, individuals who inject drugs, pregnant women, and those born in regions where hepatitis B is common. Early detection through laboratory testing allows for appropriate medical management and can prevent serious complications such as cirrhosis and liver cancer. Vaccination is available and highly effective at preventing hepatitis B infection, and post-vaccination testing can confirm that protective antibodies have developed.