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infectious
Hepatitis B Surface Antigen
HBsAg· also: HepBsAg
Clinical Overview
HBsAg is the first marker to appear in Hepatitis B infection. A positive result indicates active Hepatitis B infection (acute or chronic). Screening recommended for all adults at risk.
Reference RangesWHO/IFCC standards
| Reference Range | Unit | Notes |
|---|---|---|
| Negative / Non-reactive | qualitative | Negative = normal; Positive = Hepatitis B infection |
Also reported in: S/CO ratio.
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Related Topics
hepatitis Bliverviral hepatitisscreening