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HelpTest ID HBAGP Hepatitis B Surface Antigen Prenatal, Serum
Ordering Guidance
This test should not be used to test symptomatic individuals who may or may not have risk factors for hepatitis B virus (HBV) infection. For testing such individuals, order HBAG / Hepatitis B Surface Antigen, Serum.
This test should not be used to screen or test asymptomatic, nonpregnant individuals with or without risk factors for HBV infection. For testing such patients, order HBGSN / Hepatitis B Surface Antigen Screen, Serum.
This test is not intended for testing cadaver or grossly hemolyzed specimens. For testing such patients, order HBGCD / Hepatitis B Surface Antigen for Cadaveric or Hemolyzed Specimens, Serum, which is US Food and Drug Administration-approved for testing on these sources.
Additional Testing Requirements
Testing for acute hepatitis B virus (HBV) infection should also include HBIM / Hepatitis B Core Antibody, IgM, Serum, as during the acute HBV infection "window period," hepatitis B surface (HBs) antigen and HBs antibody may not be detected.
Necessary Information
1. Date of collection is required.
2. Indicate if specimens are from autopsy/cadaver or hemolyzed sources so that the proper FDA-licensed assay can be performed.
Specimen Required
Collection Container/Tube: Serum gel
Submission Container/Tube: Plastic vial
Specimen Volume: 2 mL
Collection Instructions:
1. Centrifuge blood collection tube per collection tube manufacturer's instructions (eg, centrifuge and aliquot within 2 hours of collection for BD Vacutainer tubes).
2. Aliquot serum into plastic vial.
Forms
If not ordering electronically, complete, print, and send 1 of the following with the specimen:
Secondary ID
86185Useful For
Diagnosis of acute, recent, or chronic hepatitis B infection (HBV)
Determination of chronic HBV infection status
Screening pregnant women for evidence of chronic HBV (or hepatitis B carrier state) to identify neonates who are at high risk of acquiring HBV at birth
This test should not be used as a screening or confirmatory test for blood donor specimens.
This test is not useful for diagnosis of hepatitis B during the “window period" of acute HBV infection (ie, after disappearance of hepatitis B surface antigen and prior to appearance of hepatitis B surface antibody).
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| HBNTP | HBs Ag Confirmation Prenatal, S | No | No |
Testing Algorithm
If hepatitis B surface antigen (HBsAg) prenatal is reactive, then HBsAg confirmation will be performed at an additional charge.
Special Instructions
Method Name
Chemiluminescence Immunoassay (CIA)
Reporting Name
HBs Antigen Prenatal, SSpecimen Type
Serum SSTSpecimen Minimum Volume
0.6 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum SST | Frozen (preferred) | 28 days | |
| Refrigerated | 7 days | ||
| Ambient | 24 hours |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | Reject |
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 to 2 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
87340
87341 (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| HBAGP | HBs Antigen Prenatal, S | 5196-1 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| HBSAP | HBs Antigen Prenatal, S | 5196-1 |