Evaluation of different methods for detecting circulating immune complexes. An inter-laboratory study

G. Füst, Maria Kavai, G. Szegedi, Katalin Meretey, A. Falus, Agota Lenkey, Maria Misz

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Forty serum samples of healthy blood donors and 60 sera of SLE patients were tested in parallel by 7 different assays for detecting immune complexes. Significantly higher titres and significantly higher incidence of positive results were observed in the patient group than in the control group in 6 tests. No test discriminated between patients in an active stage of the disease and those whose disease was inactive. Significantly higher immune complex levels were found in lupus nephritis than in the non-nephritic patients by the complement consumption test. Significant positive correlation was obtained betweeb the results of the macrophage aggregated IgG uptake inhibition and PEG-precipitation tests and between two tests based on the interaction of the complexes with the complement system. A characteristic ‘profile’ of the immune complex assays was observed in the course of the repeated testings of the same patients. The results indicate that the different methods detect different types of immune complexes present in the blood of the patients.

Original languageEnglish
Pages (from-to)281-289
Number of pages9
JournalJournal of Immunological Methods
Volume38
Issue number3-4
DOIs
Publication statusPublished - 1980

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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