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Test Code HBNTP Hepatitis B Surface Antigen Confirmation, Prenatal, Serum

Useful For

Diagnosis of acute, recent, or chronic hepatitis B infection in prenatal patients

 

This test is not useful during the "window period" of acute hepatitis B virus (HBV) infection (ie, after disappearance of HBsAg and prior to appearance of hepatitis B surface 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, S

Specimen Type

Serum SST


Ordering Guidance


Postmortem, cadaver, and hemolyzed serum specimens should be tested only by assays that are US Food and Drug Administration-licensed for testing on such specimen sources. Order HBGCD / Hepatitis B Surface Antigen for Cadaveric or Hemolyzed Specimens, Serum.

 

Testing for acute HBV infection should also include HBIM / Hepatitis B Core Antibody, IgM, Serum.



Specimen Required


Only orderable as a reflex. For more information see HBAGP / Hepatitis B Surface Antigen Prenatal, Serum.

 

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.


Specimen Minimum Volume

1.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum SST Frozen (preferred) 28 days
  Refrigerated  7 days
  Ambient  24 hours

Reference Values

Only orderable as a reflex. For more information see HBAGP / Hepatitis B Surface Antigen Prenatal, Serum.

 

Negative

Performing 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

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

Method Name

Only orderable as a reflex. For more information see HBAGP / Hepatitis B Surface Antigen Prenatal, Serum.

 

Chemiluminescence Immunoassay (CIA)

Report Available

2 to 4 days

Day(s) Performed

Monday, Wednesday, Friday