Test Catalog

Test ID: HBAG    
Hepatitis B Surface Antigen, Serum

Useful For Suggests clinical disorders or settings where the test may be helpful

Diagnosis of acute, recent, or chronic hepatitis B infection


Determination of chronic hepatitis B infection status


This test is not offered as a screening or confirmatory test for blood donor specimens.


This test, by itself , is not useful during the "window period" of acute hepatitis B virus (HBV) infection (ie, after disappearance of hepatitis B surface antigen and prior to appearance of hepatitis B surface antibody ). Testing for acute HBV infection should also include hepatitis B core IgM antibody (anti-HBc IgM).

Reflex Tests Lists tests that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial tests.

Test IDReporting NameAvailable SeparatelyAlways Performed
HBGNTHBs Antigen Confirmation, SNoNo

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

If hepatitis B surface antigen (HBsAg) screen is reactive with signal-to-cutoff (S/CO) ratio in the range of 1.00 to 100.0 then HBsAg confirmation will be performed at an additional charge.


See the following in Special Instructions:

-HBV Infection-Diagnostic Approach and Management Algorithm

-HBV Infection-Monitoring Before and After Liver Transplantation

Special Instructions Library of PDFs including pertinent information and forms related to the test

Method Name A short description of the method used to perform the test

Chemiluminescence Immunoassay

NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

HBs Antigen, S

Aliases Lists additional common names for a test, as an aid in searching

Hepatitis Bs Ag
HBsAg (Hepatitis Bs Antigen)
HBV surface antigen
HBV s antigen
Hepatitis B surface antigen
Hepatitis Bs antigen