Summary
A Specific, sensitive and convenient Elisa for total IgA in serum, carried out on microtitre plates and based on commercially available reagents, was developed and extensively validated. The cross-reactivity of both IgG and IgM was much less than 0.1% and other serum proteins were undetectable. The detection limit was 0.18 ng/well or 90 micrograms/ml of serum, allowing for pre-dilution. Sera from normal (1.4-4.1 mg/ml), coeliacs (1.6-13.52 mg/ml) and IgA deficient individuals (0.05-0.4 mg/ ml) were analysed.
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We wish to thank the Medical Research Council of Ireland for supporting this project as part of its funding of the Centre for Digestive Disorders, Galway, and for a postgraduate funding grant to M.C.B. We also wish to thank Dr. Fiona Stevens and Dr. Eilis Cryan. J.P.G. acknowledges the Agricultural Institute for a grant in aid.
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Booth, M.C., Gosling, J.P., Fottrell, P.F.F. et al. A rapid, convenient enzyme linked immunosorbent assay for total immunoglobulin a in serum. I.J.M.S. 154, 146–152 (1985). https://doi.org/10.1007/BF02937257
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DOI: https://doi.org/10.1007/BF02937257