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Hepatitis B Surface Antibody
MessageTesting lab switched from VA Connecticut to VA Boston (West Roxbury division) on 1/2/19
Test Code
HEP B SURF AB
Alias/See Also
HBsAB
Preferred Specimen
Gold top tube
Minimum Volume
0.5mL
Transport Temperature
Refrigerated
Specimen Stability
Room temperature (20 to 25°C): 3 days
Refrigerated (2-8°C): 7 days
Frozen (-20°C or colder): >7 days
Avoid more than 3 freeze/thaw cycles
Refrigerated (2-8°C): 7 days
Frozen (-20°C or colder): >7 days
Avoid more than 3 freeze/thaw cycles
Setup Schedule
M - F
Report Available
TAT 1 - 4 days
Reference Range
Non-reactive
Clinical Significance
NONREACTIVE - the individual is considered NOT IMMUNE to HBV infection
GRAYZONE - the immune status of the individual should be further assessed by considering other factors such as clinical status, follow-up testing, associated risk factors, and the use of additional diagnostic information.
REACTIVE - the individual is considered IMMUNE to HBV infection
GRAYZONE - the immune status of the individual should be further assessed by considering other factors such as clinical status, follow-up testing, associated risk factors, and the use of additional diagnostic information.
REACTIVE - the individual is considered IMMUNE to HBV infection
Performing Laboratory
- Test performed at the West Roxbury Chemistry Lab
Last Updated: November 25, 2025
