The HbsAg (Hepatitis B Surface Antigen) Quantitative Test is a blood test that measures the exact amount of HBsAg in the blood. 🧪🩸

• Unlike the qualitative test (which only reports positive or negative), this test provides a numerical value of HBsAg, usually in IU/mL (International Units per milliliter).
• The level of HBsAg helps assess viral activity, disease progression, and response to treatment in Hepatitis B Virus infection.