This test detects the Hepatitis B surface antigen. HBsAg is used to identify the presence of acute infection. It can serve as an indicator of chronic infection when it is present for more than six months.
Hey Practitioners! 
Join Dr. Chris Magryta and Dr. Erik Lundquist for a comprehensive 6-week course on evaluating functional medicine labs from two perspectives: adult and pediatric. In this course, you’ll explore the convergence of lab results across different diseases and age groups, understanding how human lab values vary on a continuum influenced by age, genetics, and time. Register here.
Register Here
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