Skip to main content
Your session has expired. Reloading...
Serology STD

HBsAg Test

A Hepatitis B Surface Antigen (HBsAg) test detects the presence of HBsAg in your blood, which is one of the earliest indicators of a hepatitis B infection. A positive result may indicate an active hepatitis B infection and should be evaluated by a healthcare professional.

Turnaround up to 72 hours, estimate Turnaround: up to 72 hours after your blood draw (estimate).

Reference Ranges

Expected result Negative

A negative result means no active hepatitis B infection was detected. Note that HBsAg only becomes detectable 1 to 12 weeks after exposure, so a negative result shortly after a possible exposure does not rule out infection. Dutch laboratories therefore never test HBsAg alone, but always alongside anti-HBc (RIVM, NHG).

Reference values can vary between laboratories. Discuss your results with your GP for explanation and treatment decisions.

Hepatitis B Surface Antigen: what this test measures

This test detects the hepatitis B surface antigen, a protein on the outer surface of the hepatitis B virus. HBsAg is one of the first detectable markers after infection and can indicate an acute or chronic infection. The test provides a qualitative result indicating whether the antigen is present in your blood.

Hepatitis B Surface Antigen: why this value matters

HBsAg is the hallmark marker for identifying active hepatitis B infection. A positive result persisting for more than six months may indicate chronic hepatitis B, which can lead to liver damage, cirrhosis, or liver cancer if left unmanaged. Early detection supports timely medical intervention and helps prevent transmission to others.

Hepatitis B Surface Antigen: how the blood test works

Referral
No GP referral needed. After the order we arrange the referral through ZorgDomein, within one business day; orders after 17:00 or at the weekend start on the next business day. ZorgDomein emails a barcode, and that barcode is what the draw site needs.
The draw
A blood draw from a vein in the arm, at a partner laboratory's draw site. No home kit, no finger prick.
Results
Turnaround: up to 72 hours after your blood draw (estimate).
Where
650+ draw sites run by independent laboratories across the Netherlands. Draw sites

Hepatitis B Surface Antigen: when is testing worthwhile?

Testing may be recommended for individuals at higher risk of hepatitis B infection, as part of routine prenatal screening, before starting immunosuppressive therapy, or when hepatitis B infection is suspected based on symptoms or exposure. Consult a healthcare professional for guidance.

Hepatitis B Surface Antigen: what to do about an abnormal value

Male

If Low

Negative result indicates no current Hepatitis B infection. Consider vaccination if not immune.

If High

Positive result indicates current Hepatitis B infection. Requires immediate consultation with hepatologist for treatment evaluation.

Female

If Low

Negative result indicates no current Hepatitis B infection. Consider vaccination if not immune.

If High

Positive result indicates current Hepatitis B infection. Requires immediate consultation with hepatologist for treatment evaluation.

Hepatitis B Surface Antigen: lifestyle and this value

Protect your liver by limiting alcohol intake, maintaining a balanced diet, and exercising regularly. If you have not been vaccinated against hepatitis B, discuss vaccination with your healthcare provider. Avoid sharing needles, razors, or other personal items that may carry blood.

Hepatitis B Surface Antigen: frequently asked questions

What does a positive HBsAg result mean?

A positive HBsAg result means the hepatitis B surface antigen was detected in your blood, which may indicate an active hepatitis B infection. Further testing is needed to determine whether the infection is acute or chronic. Consult a healthcare professional for a full evaluation.

Can I have hepatitis B without symptoms?

Yes, many people with hepatitis B, particularly chronic hepatitis B, may not experience noticeable symptoms for years. This is why screening is important for individuals at higher risk. Regular monitoring by a healthcare professional can help detect and manage the infection early.

Tests with related values

These panels measure values from the same category as this marker.

Results without a doctor's assessment

You receive your values with the unit and reference range. A doctor's assessment is not part of this site. Discuss your results with your GP for explanation and treatment decisions.

Hepatitis B Surface Antigen

€55,-