Hepatitis B virus DNA (PCR) test
Quick answer: This test looks for the genetic material of the hepatitis B virus in your blood and can measure how much virus is present. Doctors use it in people with hepatitis B to see how active the infection is, decide on treatment and monitor it.
- SampleBlood
- TakesAbout 5 minutes
- Before the testNo special preparation is usually needed.
- In fertility careIn pregnant women with hepatitis B, viral load helps decide whether treatment is needed to protect the baby.
How the test is done
- 1You sit and the skin over a vein is cleaned
- 2A needle draws blood into a special tube
- 3The sample is sent for PCR testing
- 4Repeat tests may be done to follow the viral load
What your results can mean
Reading your report
Your doctor will read the viral load with your liver tests and other hepatitis B markers.
If the result is outside the usual range
A detected or high viral load can mean the hepatitis B virus is actively multiplying, which helps doctors decide on treatment. A falling or undetected level can show that treatment is working.
Who usually has this test
People with hepatitis B, pregnant women with hepatitis B, and couples having IVF where one partner has hepatitis B.
Risks and aftercare
Nothing special is needed afterwards; keep any bruise clean and covered for a few hours.
Names and options
Also called: HBV DNA, hepatitis B viral load, HBV PCR
Options
- Qualitative (detected or not)
- Quantitative (viral load)
Listed by the hospital as
- HBV DNA PCR QUALITATIVE
- HBV DNA QUANTIFICATION (VIRAL LOAD), EDTA PLA
Questions about this test
Why is HBV DNA checked in pregnancy?
A high viral load raises the chance of passing hepatitis B to the baby. Your doctor may advise treatment in late pregnancy and vaccination for the baby at birth.
How is HBV DNA different from a hepatitis B surface antigen test?
The surface antigen test shows whether you have hepatitis B. HBV DNA shows how much virus is present.
Can I have IVF if I have hepatitis B?
Yes. Clinics take extra lab precautions, and your doctor may check your viral load and liver health first.
Related tests
Tamara Hospital & IVF Centre, Rajajinagar
34/3, 10th Cross Road, opp. Vardhaka Sardar Patel School, 1st N Block, 2nd Stage, Rajajinagar, Bengaluru 560010
The hospital is open 24 hours. Call before you come to check the timing for your scan or sample collection.
Get directions ↗IVF Pulse fertility care at Tamara Hospital →
Reception
Waiting area
IVF lab
This page explains each test in general terms so you know what to expect. It is not medical advice: your doctor decides which tests you need and what your results mean. Reference ranges differ between laboratories. Updated 4 November 2026.