Beacle has been a leader in devloping original hepatitis B virus-related products for over 10 years.Hepatitis B infection is generally diagnosed by detection of HBsAg. HBsAg is composed of three domains but only the qualitative presence of S-antigen in serum is used for diagnosis. This kit is designed for quantitative determination of the S-antigen. Because this kit uses recombinant antigen, reproducible measurements of S- antigen can be performed in a safe manner.Quantitative determination of HBsAgHigh sensitivity (as low as 1.0 nUnit/mL)Safe and reproducible due to the recombinant standardHigh specificity