Test Name
HEPATITIS B SURFACE ANTIGEN (HBsAg) (SEMI-QUANTITATIVE)
Aliases
HBSAG “ELISA”
Abbreviations
HBSAG
Test Classification
INDIVIDUAL
Department
SEROLOGY
Sub Department
INFECTIOUS
TAT Category
BUSINESS (WORKING) TIME
Estimated TAT
2
TAT Units
HOURS
Test Requirements
Serum in plain tube (red top) or SST tube (yellow top) or in a separation vial. Centrifuge tubes within 1 hour. Separate centrifuged serum in plain tubes within 1 hour.
SHIPPING/ TRANSPORTATION REQUIREMENTS
Shipping Temperature: Refrigerated
ANALYTE STABILITY
Room Temperature: 7 days at 20-25°C │ Refrigerated: 1 month at 2-8°C │ Frozen: 1 month at -20°C
Clinical Utility
HBsAg is the first serologic marker that can be detected after infection with hepatitis B virus (HBV). It is used to diagnose acute or chronic HBV infection. Chronic HBV infection is defined by persistent HBsAg seropositivity for ≥6 months & can progress to liver cirrhosis & hepatocellular carcinoma.
Last Review
26th Feb 2026