గర్భధారణ ల్యాబ్ పరీక్షలు
Hepatitis B Test (HBsAg) in Pregnancy
Prevents vertical transmission — hepatitis B is the leading cause of liver disease in India
ఇది దేనిని కొలుస్తుంది?
The HBsAg test (Hepatitis B surface antigen) detects whether you are infected with the Hepatitis B virus (HBV). HBsAg is a protein on the surface of the virus — its presence in the blood means you are currently infected (whether acutely or as a chronic carrier). Hepatitis B is a viral infection that affects the liver. It can cause acute hepatitis, chronic liver disease, cirrhosis, and hepatocellular carcinoma (liver cancer). In pregnancy, the major concern is vertical transmission — transmission of the virus from mother to baby during delivery, or occasionally through the placenta.
ఇది ఎప్పుడు సూచించబడుతుంది?
At the first antenatal (booking) visit — tested once in pregnancy unless there is a clinical reason to retest. All pregnant women in India are screened under national guidelines as part of the standard antenatal panel.
గర్భధారణ సమయంలో సాధారణ పరిధులు
అసాధారణ ఫలితం అంటే ఏమిటి?
If you are HBsAg positive, you are a Hepatitis B carrier. The main risk in pregnancy is vertical transmission to your baby during delivery (when the baby is exposed to infected maternal blood and secretions). Without any intervention: a baby born to an HBeAg-positive (high viral load) mother has a 70–90% chance of becoming infected, and 90% of perinatally infected infants develop chronic Hepatitis B (vs only 5% of adults infected). Chronic HBV in childhood leads to cirrhosis and liver cancer in adulthood. With proper intervention (vaccine + HBIG at birth), vertical transmission is prevented in 95% of cases. If viral load is very high (> 200,000 IU/mL), antiviral therapy with tenofovir in the third trimester further reduces transmission risk.
దక్షిణ భారత మహిళలకు దీని అర్థం ఏమిటి
India's HBsAg prevalence is approximately 2–4% in the general population, placing it in the intermediate endemicity zone. The National Immunisation Programme mandates free Hepatitis B vaccination at birth in all government hospitals. Blood banks screen all donated blood for HBV. Breastfeeding is safe for HBsAg-positive mothers — provided the baby has received the vaccine + HBIG within 12 hours of birth. Hepatitis B is not spread through casual contact, shared utensils, or breastfeeding in vaccinated babies.
తరచుగా అడిగే ప్రశ్నలు
I am HBsAg positive. Can I breastfeed my baby?
Yes. Breastfeeding by an HBsAg-positive mother is safe provided the baby receives the Hepatitis B vaccine and Hepatitis B immunoglobulin (HBIG) within 12 hours of birth. This vaccine-HBIG combination effectively prevents transmission through breast milk. Do not delay breastfeeding — ensure the vaccine and HBIG are given on time at the hospital.
Should my husband and family be tested?
Yes. All close household contacts of an HBsAg-positive person should be tested. Those who are not infected and not immune should receive the Hepatitis B vaccination series (three doses over 6 months). Sexual partners in particular should be tested and vaccinated if non-immune.
What vaccine schedule does my baby need?
Babies born to HBsAg-positive mothers need: Hepatitis B vaccine + HBIG within 12 hours of birth (HBIG is essential — the vaccine alone is not sufficient for high-risk babies); Hepatitis B vaccine at 1 month; Hepatitis B vaccine at 6 months. After completing the series, an HBsAg test and anti-HBs antibody test at 9–12 months confirm protection. The free government immunisation programme includes birth-dose HBV vaccine; ensure your delivery hospital has HBIG available for a positive mother's baby.
Can I be treated for hepatitis B during pregnancy?
If your viral load is very high (HBV DNA > 200,000 IU/mL), your doctor may recommend tenofovir (an antiviral medication) starting at 28–32 weeks to reduce the viral load before delivery, further reducing transmission risk to the baby. Tenofovir has a good safety profile in pregnancy. Most HBsAg-positive women with low viral load do not need antiviral treatment during pregnancy.
I had hepatitis B in the past and recovered. Does this affect my pregnancy?
If you recovered completely from past Hepatitis B infection, you will be HBsAg negative and have protective anti-HBs antibodies — this means you are immune and there is no risk of transmission to your baby. If you are a chronic carrier (HBsAg positive for more than 6 months), that is different from resolved infection and requires the management described above.