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HelpTest Code HBNTP Hepatitis B Virus Surface Antigen Confirmation, Prenatal, Serum
Useful For
Diagnosis of acute, recent, or chronic hepatitis B in prenatal patients
This test is not useful during the "window period" of acute hepatitis B (ie, after disappearance of hepatitis B virus surface antigen [HBsAg] and prior to appearance of HBs antibody).
This test is not suitable as stand-alone prenatal screening test of HBsAg status in pregnant women.
This test is not offered as a HBsAg screening or confirmatory test for blood donor specimens.
Reporting Name
HBs Ag Confirmation Prenatal, SSpecimen Type
Serum SSTOrdering Guidance
Specimen Required
Only orderable as a reflex. For more information see HBAGP / Hepatitis B Virus Surface Antigen Prenatal, Serum.
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: 0.8 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
0.7 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum SST | Frozen (preferred) | 90 days | |
| Refrigerated | 6 days | ||
| Ambient | 72 hours |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | Reject |
Specimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
87341
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| HBNTP | HBs Ag Confirmation Prenatal, S | 7905-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| HBNTP | HBs Ag Confirmation Prenatal, S | 7905-3 |
Special Instructions
Report Available
Same day/1 to 3 daysDay(s) Performed
Monday through Saturday