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HelpOrder Code HBABP Hepatitis B Virus Surface Antibody Prenatal, Qualitative/Quantitative, Serum
Ordering Guidance
If patient is being monitored for hepatitis B immune globulin (HBIG) therapy after organ transplantation, order HBABT / Hepatitis B Virus Surface Antibody Monitor, Post-Transplant, Serum.
This test should not be used for screening asymptomatic, nonpregnant individuals with or without risk factors for hepatitis B virus infection. For screening such patients, order HBBSN / Hepatitis B Virus Surface Antibody Screen, Qualitative/Quantitative, Serum.
This test should not be used for diagnostic testing symptomatic individuals to evaluate post-vaccination immunity status or post-acute infection status of hepatitis B. For diagnostic testing such patients, order HBAB / Hepatitis B Virus Surface Antibody, Qualitative/Quantitative, Serum.
Necessary Information
Date of collection is required.
Specimen Required
Patient Preparation: For 24 hours before specimen collection, patient should not take multivitamins or dietary supplements (eg, hair, skin, and nail supplements) containing biotin (vitamin B7).
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Serum gel (red-top tubes are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 0.7 mL
Collection Instructions:
1. Centrifuge blood collection tube per manufacturer's instructions (eg, centrifuge and aliquot within 2 hours of collection for BD Vacutainer tubes).
2. Aliquot serum into plastic vial.
Useful For
Identifying previous exposure to hepatitis B virus in pregnant individuals
Determining adequate immunity from hepatitis B vaccination during pregnancy
Testing Algorithm
For more information see Hepatitis B: Testing Algorithm for Screening, Diagnosis, and Management
Special Instructions
Method Name
Electrochemiluminescence Immunoassay (ECLIA)
Reporting Name
HBs Antibody Prenatal, SSpecimen Type
Serum SSTSpecimen Minimum Volume
0.6 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum SST | Frozen (preferred) | 90 days |
| Refrigerated | 6 days | |
| Ambient | 7 hours |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | Reject |
| Heat-inactivated specimen | Reject |
Reference Values
Hepatitis B Surface Antibody
Unvaccinated: Negative
Vaccinated: Positive
Hepatitis B Surface Antibody, Quantitative
Unvaccinated: <8.5 mIU/mL
Vaccinated: ≥11.5 mIU/mL
Method Description
The Elecsys hepatitis B surface antibody (anti-HBs) quantitative assay is performed using an electrochemiluminescent immunoassay on the automated cobas e 801 immunochemistry analyzer. Anti-HBs present in patient's sample reacts with the biotinylated HBs antigen (ad and ay subtypes) and HBs antigen (ad/ay) labeled with a ruthenium complex to form a sandwich complex. After the addition of streptavidin-coated microparticles, the complexes bind to a solid phase via interaction of biotin and streptavidin. The reaction mixture is aspirated into the measuring cell where microparticles are magnetically captured onto the surface of the electrode, and unbound substances are washed away. Voltage is applied to the electrode, which induces chemiluminescent emissions that are measured by a photomultiplier. The emission signal generated is directly proportional to the concentration of anti-HBs present in the patient's serum sample.(Package insert: Elecsys Anti-HBs. Roche Diagnostics; v3.0, 03/2024)
Day(s) Performed
Monday through Saturday
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86706
Forms
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