Hepatitis B Virus Surface Antigen with Reflex to Confirmation

Casandra

Casandra Test Code AR05824Version 1 (DRAFT)

Performing Lab

Lab ARUP LaboratoriesLab Test ID 0020089CPT Codes 87340, 87341

Hepatitis B Virus Surface Antigen with Reflex to Confirmation

Also known as: HBSAG

Clinical Use

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Use

The test helps diagnose acute or chronic Hepatitis B Virus infection by detecting the presence of the hepatitis B surface antigen (HBsAg) in the blood. It is commonly used in conjunction with other hepatitis markers for screening and monitoring. This test provides important information regarding the infection status of a patient, which is crucial for treatment decisions and for monitoring the effectiveness of therapy in infected individuals.

Special Instructions

The test is often ordered as part of the acute hepatitis panel, which includes HAV IgM, HBV core antibody IgM, HBV surface antigen, and HCV antibody. Specifically refer to 'Hepatitis Panel, Acute with Reflex to HBsAg Confirmation and Reflex to HCV by Quantitative NAAT (3002989)' for comprehensive analysis.

Limitations

This panel should not be used for blood donor screening, associated reentry protocols, nor for screening human cells, tissues, and cellular- and tissue-based products (HCT/P). False positives can occur in the screening; confirmatory testing helps clarify results when needed. If the initial screen is repeatedly reactive with an index value between 1.00 and 50.00, additional confirmation is performed.

Test Details

FDA Approved