Detects the genetic material (DNA/RNA) of hepatitis B virus using PCR.
Directly confirms an active infection, often earlier than antibody tests can. Used in the diagnosis of hepatitis B, a viral liver infection that can become chronic.
Jaundice, nausea, abdominal pain or swelling, alcohol use, fatty liver, hepatitis risk, or people on long-term medicines.
No fasting needed.
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PCR detects the organism itself, so it is very useful early in infection; antibody tests show the body's response and are useful later.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Usually a blood sample; for some infections a swab, CSF, urine or other sample is used — as advised by your doctor.
Usually within 40–64 hours after the sample reaches the lab. You will receive the report online.