Digestive Diseases and Sciences

, Volume 31, Issue 6, pp 620–624

Clinical significance of concurrent hepatitis B surface antigen and antibody positivity

  • Tat-Kin Tsang
  • Andres T. Blei
  • Daniel J. O'Reilly
  • Richard Decker
Original Articles

DOI: 10.1007/BF01318693

Cite this article as:
Tsang, T., Blei, A.T., O'Reilly, D.J. et al. Digest Dis Sci (1986) 31: 620. doi:10.1007/BF01318693

Abstract

Over a period of 30 months, 64 patients with concurrently positive hepatitis B surface antigen (HBsAg) and antibody (anti-HB5) were identified at two institutions. When all assays were considered, 23.9% of HBsAg-positive individuals exhibited anti-HBs. Both persistent HBsAg/anti-HBs positivity and variable changes in antigen or antibody status were observed among the 36 patients with follow-up beyond six months. When compared to a control group, these patients did not exhibit differences in risk factors for acquiring hepatitis B or in clinical and histological diagnoses. Concurrent HBsAg and anti-HBs was present at detection in 25 patients, while antibody appeared in the remaining 11 subjects. Subsequently, it was undetectable in seven of these 36 patients; no clinical changes occurred at the time of acquisition or loss of the antibody. The titer of the antibody was below 10 mIU/ml in 75% of these individuals. In 10 patients, the subtype of HBsAg was ad, while the anti-HBs was anti-y. Concurrent HBsAg and anti-HBs is a pattern frequently observed throughout the spectrum of hepatitis B-related events. The heterotypic antibody in these patients is of a low titer, and its appearance or disappearance is not associated with changes in the clinical course; simultaneous HBsAg/anti-HBs positivity does not appear to reflect a distinct clinical entity.

Copyright information

© Plenum Publishing Corporation 1986

Authors and Affiliations

  • Tat-Kin Tsang
    • 1
    • 2
    • 3
  • Andres T. Blei
    • 1
    • 2
    • 3
  • Daniel J. O'Reilly
    • 1
    • 2
    • 3
  • Richard Decker
    • 1
    • 2
    • 3
  1. 1.Department of MedicineVeterans Administration Lakeside Medical CenterChicago
  2. 2.Northwestern UniversityChicago
  3. 3.Abbott LaboratoriesNorth Chicago