Home
HelpOrder Code LABHBAB Hepatitis B Virus Surface Antibody, Qualitative/Quantitative, Serum
Additional Codes
| Mayo Test ID |
|---|
| HBAB |
Reporting Name
HBs Antibody, SUseful For
Identifying previous exposure to hepatitis B virus
Determining adequate immunity from hepatitis B vaccination
Specimen Type
Serum SSTOrdering 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 (HBV) infection. For screening such patients, order HBBSN / Hepatitis B Virus Surface Antibody Screen, Qualitative/Quantitative, Serum.
This test should not be used for prenatal screening of pregnant individuals with or without risk factors for HBV infection. For screening such patients, order HBABP / Hepatitis B Virus Surface Antibody Prenatal, 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 a plastic vial.
Specimen 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
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Day(s) Performed
Monday through Saturday
Method Name
Electrochemiluminescence Immunoassay (ECLIA)
CPT Code Information
86706
Testing Algorithm
For more information see Hepatitis B: Testing Algorithm for Screening, Diagnosis, and Management
Special Instructions
Method Description
The Elecsys Anti-HBs (hepatitis B virus surface antibody) assay is based on the sandwich immunoassay principle and performed using an electrochemiluminescent immunoassay on the automated cobas e 801 immunochemistry analyzer. Anti-HBs present in patient's serum 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 (solid phase), the complexes bind to the 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. Unbound substances are then washed away, and voltage is applied to the electrode, which induces chemiluminescent emissions that is measured by a photomultiplier. The emission signal generated is directly proportional to the concentration of anti-HBs present in the patient's sample. (Package insert: Elecsys Anti-HBs. Roche Diagnostics; v3.0, 03/2024)
Forms
If not ordering electronically, complete, print, and send 1 of the following: