HomeLab TestsHepatitis Testing
Back to Lab Tests
Hepatitis Testing
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Lab Tests

Hepatitis Testing

Hepatitis testing uses a blood sample to detect current or past viral infections that cause liver inflammation and damage.

What is hepatitis testing?

Hepatitis testing checks for viral hepatitis, a type of liver disease that causes inflammation and damage. The most common method is a hepatitis panel, which checks for signs of the following types using one blood sample:

  • Hepatitis A (HAV): Usually spread by contaminated food, water, or close contact. Most people recover on their own; vaccination is the best prevention.
  • Hepatitis B (HBV): Spread through blood, semen, or other body fluids. It can become a chronic infection; vaccination is the best prevention.
  • Hepatitis C (HCV): Spread through blood, often via shared needles or sexual contact. It is more likely to become chronic, but unlike HAV and HBV, it can be cured with medicine.
  • Hepatitis D (HDV): Spread through blood or body fluids. It only occurs in people who already have HBV.
  • Hepatitis E (HEV): Spread by contaminated water or undercooked foods. It is usually an acute infection, though it can become chronic in those with weakened immune systems.

Why do I need hepatitis testing?

You may need testing if you have symptoms such as jaundice, fever, fatigue, loss of appetite, dark urine, pale stool, abdominal pain, nausea, or joint pain. Your provider may also order tests if you have abnormal liver function results or are at high risk due to:

  • Working in health care
  • Using illegal intravenous (IV) drugs
  • Having conditions that weaken the immune system, such as HIV
  • Having other liver diseases
  • Being a man who has sex with other men

Medical experts recommend that all adults aged 18 and older be tested for hepatitis B and/or C at least once in their lifetime, and during each pregnancy.

What happens during hepatitis testing?

A health care professional will take a blood sample from a vein in your arm. At-home testing kits for hepatitis B and C are also available, which typically involve a finger prick to collect a blood drop for lab analysis.

What do the results mean?

Results generally indicate whether you have an active infection or had one in the past. Signs found in your blood include:

  • Hepatitis antigens: Substances in the virus that trigger your immune system. Their presence suggests an active infection.
  • Hepatitis antibodies: Proteins your immune system makes to fight the virus. Their presence may indicate an acute or chronic infection, or a past infection that has cleared.

If your results are abnormal, your provider may order further tests, such as a triple panel for hepatitis B, to confirm the diagnosis and determine if the infection is acute or chronic.

Frequently Asked Questions

Most standard hepatitis panels return results within 24 to 48 hours, though specific confirmatory tests may take longer. It is critical to understand the "window period," which is the time between exposure and when the virus or antibodies become detectable in the blood. For example, Hepatitis B surface antigen may not appear for up to 12 weeks after exposure. If you test negative shortly after a known exposure, your provider may recommend retesting after the window period has passed to rule out a false negative.
standard hepatitis panel screens for antibodies and antigens to determine if you have been exposed to or currently have an active infection. A Hepatitis C RNA test (quantitative PCR) specifically measures the amount of viral genetic material in your blood. If your initial panel shows positive Hepatitis C antibodies, an RNA test is required to confirm an active infection, as antibodies can remain positive even after the virus has been cleared or cured. The RNA test is also used to monitor treatment response and determine if the virus has been successfully eradicated.
Hepatitis testing primarily identifies the presence of the virus or past exposure; it does not directly measure the extent of liver damage. To assess liver health, providers often order additional tests such as liver function tests (LFTs), which measure enzymes like ALT and AST, or imaging studies like an ultrasound or FibroScan. A person can test positive for Hepatitis C but have minimal liver damage, or have significant fibrosis with a low viral load, so a comprehensive evaluation usually includes both viral markers and liver function assessments.
You generally do not need to fast before a standard hepatitis viral panel, as the test looks for specific viral markers rather than metabolic levels. However, if your provider orders a comprehensive metabolic panel (CMP) or liver function tests alongside the hepatitis panel, you may be asked to fast for 8 to 12 hours. Always confirm specific preparation instructions with your healthcare provider or the lab, especially if you are taking medications that affect liver enzymes, as these should be disclosed but typically not stopped without medical advice.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

kontakt@hittavard.se

Ⓒ 2024. Alla rättigheter förbehålls av juxt ab

Sök
Om ossVillkor och policyVanliga frågorKontakta oss