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Hepatitis Virus Antibody, Serum — Disease Exposure/Donor Screening

Published: August 9, 2026Updated: August 16, 2026

A blood test for antibodies to a hepatitis virus, used in some exposure and donor-screening settings. The exact virus type and antibody target are unclear.

Quick summary

["This test can help assess hepatitis-virus exposure, infection history, or immunity, but the full test order is needed for interpretation."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
29485-0
Short code
Hep v Vmax sys/dias exp DOP.der
Synonyms
Hep v Vmax sys/dias exp DOP.der
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-doppler-derived
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

This appears to be a serum blood test that detects antibodies associated with a hepatitis virus. Antibodies are proteins made by the immune system after an infection or vaccination. The abbreviated order does not clearly identify the virus type or the specific antibody being measured.

Why might I need this test?

The test may be ordered after a possible hepatitis exposure, during blood or organ donor screening, or to evaluate prior infection or vaccine-related immunity. Your clinician can explain the specific reason it was ordered.

How is the test performed?

A blood sample is drawn and examined in the laboratory for the specified hepatitis-virus antibody. Depending on the full order, the laboratory may use an immunoassay or another validated serologic method.

How do I prepare for the test?

Fasting is usually not required for this type of blood test, but follow any instructions provided with the order. If the test follows a recent exposure, contact your clinician promptly because timing and preventive treatment may be important.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Hepatitis virus antibody

Frequently asked questions

Does a positive result mean I currently have hepatitis?
Not necessarily. If the test measures an antibody, a positive result may indicate vaccination, a past infection, or prior exposure rather than current illness.
What if the result is negative?
It means the antibody being tested was not detected. This may suggest no prior immunity or infection, but it does not by itself rule out a very recent infection.
Can this test determine whether I need vaccination?
It may help when the result measures a protective antibody, such as immunity to hepatitis B. Your clinician should confirm which antibody was tested before using the result to make a vaccination decision.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy