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Updated: Jul 20, 2026

Technique of Conjunctival Biopsy and Direct Immunofluorescence for Diagnosing Mucous Membrane Pemphigoid
Published on: June 17, 2025
Dark immunofluorescence: correlation with serum immunoglobulin abnormalities
J List1, M S Buckland, B Thobhani
1Department of Haematology Immunology Section, Colchester General Hospital, Turner Road, Colchester, Essex CO4 5JL, United Kingdom. jenny.list@essexrivers.nhs.uk
Abstract:
Occasional serum samples (<0.5%) tested by indirect immunofluorescence showed less fluorescence than did negative-control serum. A retrospective review of these patients' serum immunoglobulins revealed a high percentage of abnormalities (71%, versus 22% of controls). We suggest that this observation should be reported when seen and that the clinician should be alerted to an association with immunoglobulin abnormalities.
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