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CDC interpretation hepatitis B serologic test results anti-HBc HBeAg
Report summary
| Test | Result | Meaning |
|---|---|---|
| HBeAg (Hepatitis B e antigen) | Non-reactive, 0.690 S/CO | This does not suggest high-level active viral replication, but it does not by itself rule out hepatitis B infection. |
| Total anti-HBc (antibody to hepatitis B core antigen) | Reactive, 7.33 S/CO | Indicates exposure to hepatitis B virus at some point. It can remain positive for life after a past infection and can also be positive in current infection. It is not produced by vaccination alone. |
What this does and does not show
These two results alone cannot determine whether you currently have hepatitis B, had it in the past and recovered, or have an isolated anti-HBc result. HBeAg negativity can occur after recovery, in inactive chronic hepatitis B, or in some forms of active hepatitis B with an HBeAg-negative viral variant.
The next tests needed for correct interpretation are:
- HBsAg - hepatitis B surface antigen
- Anti-HBs - hepatitis B surface antibody
- Anti-HBc IgM - helps identify a recent/acute infection
- HBV DNA PCR - checks whether virus is present in the blood
- Liver tests - ALT, AST, bilirubin, albumin, etc.
CDC recommends interpreting hepatitis B using the combined “triple panel” of HBsAg, anti-HBs, and total anti-HBc, with additional tests when results are unclear. CDC testing guidance explains that an isolated positive total anti-HBc can represent resolved infection with waned antibodies, an uncommon false positive, or occult hepatitis B, which HBV DNA testing can clarify.
Important practical point: tell your clinician about this positive anti-HBc result before receiving chemotherapy, high-dose/prolonged steroids, rituximab, transplant-related medicines, or other immune-suppressing treatment. A past hepatitis B infection can reactivate during immunosuppression.
Please share the results for HBsAg, anti-HBs, HBV DNA, and liver enzymes if they are available, and I can interpret the whole panel.
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