Viral Marker Screening (HIV, HBsAg, Anti-HCV)
Understanding Viral Marker Screening (HIV, HBsAg, Anti-HCV)
What is Viral Marker Screening (HIV, HBsAg, Anti-HCV)?
The Viral Marker Screening (HIV, HBsAg, Anti-HCV) is a group of blood tests used to detect the presence of certain viral infections in the body. This screening helps identify if a person has been infected with hepatitis B, hepatitis C and human immunodeficiency virus (HIV).
HIV causes acquired immunodeficiency syndrome (AIDS). It attacks the immune cells that help the body fight infection, making an infected person more vulnerable to other infections and diseases. Hepatitis B and C are highly contagious liver infections. Hepatitis B is caused by hepatitis B virus (HBV) and hepatitis C is caused by hepatitis C virus (HCV). Chronic HBV or HCV infections can lead to liver damage and other complications. A Viral Marker Screening (HIV, HBsAg, Anti-HCV) test detects the presence of viral markers, including antigens and antibodies, produced by the body in response to hepatitis B, hepatitis C, or HIV infections.
People with HIV are most likely to get infected by chronic hepatitis. This co-infection causes more liver-related health problems. Hence, it is important to identify these risks early. A viral marker screening test can help detect these infections. It also helps in taking preventive steps and seeking medical care if needed.
Your doctor may suggest this test if you have risk factors for HIV, HBV, or HCV infections. Risk factors may include:
- A weakened immunity
- Unsafe sexual practices
- Intravenous drug use
- Occupational exposure to blood
- Potential exposure through medical procedures.
Additionally, this test is also done in pregnant women as a part of prenatal care. This is because infections like HIV, Hepatitis B, and Hepatitis C can be passed from the mother to the baby during pregnancy, childbirth, or breastfeeding.
Fasting is not needed for viral marker screening tests. You can eat and drink as per your daily routine. Let your doctor know about all the medications you are taking, as some of them can affect the test results. Also, a duly filled consent form is mandatory for sample collection.
Test results depend upon various factors such as clinical history, time of sample collection, etc. Discuss your specific test results with your doctor. Based on your test results, doctors may suggest some lifestyle adjustments, prescribe medications to manage your condition, and develop a holistic treatment plan.
What is Viral Marker Screening (HIV, HBsAg, Anti-HCV) used for?
The Viral Marker Screening (HIV, HBsAg, Anti-HCV) test is done:
- To detect the presence of Human Immunodeficiency Virus (HIV).
- To detect the presence of Hepatitis B Virus (HBV), and Hepatitis C Virus (HCV).
- In individuals with symptoms like loss of appetite, joint pain, dark urine, abdominal pain, nausea, vomiting, mild fever, pale skin tone, etc.
- To screen individuals with risk factors like weak immunity, unsafe sexual practices, intravenous drug use, occupational exposure to blood, etc.
- Before blood transfusion or organ donation to ensure safe transfer.
- As a part of prenatal care in pregnant women.
- As a part of pre-operative screening tests.
- In individuals already diagnosed with HIV, to check for co-infections with Hepatitis B or C.
What does Viral Marker Screening (HIV, HBsAg, Anti-HCV) measure?
Contains 3 testsThe Viral Marker Test (HIV, HBsAg, Anti-HCV) is a blood test that helps detect serious viral infections such as HIV, Hepatitis B, and Hepatitis C. It measures specific markers in the blood that appear when a person is infected with these viruses.
- HIV antigen and antibody test looks for the virus that attacks the immune system.
- HBsAg (Hepatitis B surface antigen) test checks for Hepatitis B infection.
- HCV test detects antibodies against the Hepatitis C virus, showing if a person has been exposed to it.
This test helps in early detection of infections, even when symptoms are not present. It is especially useful before surgeries, blood transfusions, during pregnancy, and in high-risk individuals. Early diagnosis helps in preventing the spread of infections and allows timely medical care.
Hepatitis C Virus (HCV) Antibody
The Hepatitis C Virus (HCV) Antibody test determines the status of current hepatitis C virus (HCV) infection or past HCV infection that has been resolved. This test, therefore, helps your doctor to guide an appropriate treatment plan. HCV causes liver inflammation and is classified into acute hepatitis infection and chronic hepatitis infection.
- Acute hepatitis C: This occurs in the first six months after exposure to the hepatitis C virus. In the early stage of the infection, acute hepatitis C is mild and may cause no symptoms. For this reason, most people do not know they have this infection.
- Chronic hepatitis C: If your body is unable to fight off the virus, you can develop a chronic hepatitis C infection. Progression from acute to chronic hepatitis C is common, occurring in about 75-85% of patients. Detecting chronic hepatitis C at the early stage is important to prevent future complications, such as liver failure, and initiate effective treatment.
The Hepatitis C Virus (HCV) Antibody test is used for screening for anti-HCV antibodies. A reactive result needs to be confirmed by other more specific NAT/ nucleic acid tests before final diagnosis.
Know more about Hepatitis C Virus (HCV) Antibody
Hepatitis B Surface Antigen (HBsAg)
The Hepatitis B Surface Antigen (HBsAg) test detects the presence of a specific protein on the surface of the Hepatitis B virus (HBV) in the bloodstream. This protein, HBsAg, serves as a crucial marker for identifying HBV infection. This is a screening test and the diagnosis of any reactive HBsAg result relies on additional supplemental tests like anti-HBs antibody and total anti-HBc antibodies. Confirmation can be done using nucleic acid tests like HBV DNA by PCR. The Hepatitis B Surface Antigen (HBsAg) test is essential for identifying individuals who require medical intervention, such as antiviral therapy, and for implementing measures to prevent the spread of Hepatitis B virus to others.
Know more about Hepatitis B Surface Antigen (HBsAg)
HIV Combo (Antigen And Antibody) Test
An HIV Combo (Antigen And Antibody) Test simultaneously detects HIV p24 antigen and antibodies associated with HIV 1 & 2. The HIV p24 antigen is the most abundant HIV protein. Its detection is used clinically to diagnose an HIV infection early on since HIV-specific antibodies are not detectable in a very recently acquired infection.
HIV-1 was discovered first and is the most widespread. HIV-2 is more than 55% genetically different from HIV-1. The transmission rate of HIV-2 is also slower than HIV-1.
Know more about HIV Combo (Antigen And Antibody) Test
Frequently Asked Questions about Viral Marker Screening (HIV, HBsAg, Anti-HCV)
Q. When is the Viral Marker Screening (HIV, HBsAg, Anti-HCV) test done?
Q. What are the symptoms that require the viral marker screening test?
Q. How is the viral marker screening test performed?
Q. Are there any risks associated with the viral marker screening test?
Q. Do I need to make any special preparations for the test?
Q. What should I do if my viral marker screening test is reactive?
Q. How can I prevent hepatitis B infection?
Q. How can I prevent hepatitis C infection?
Q. Is an HIV infection curable?
Q. How do these infections spread?
Q. How does Tata 1mg ensure accurate lab test results?
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