Leprosy Diagnostic Landscape

Anti-PGL-I ELISA (IgM)

Enzyme immunoassay for IgM directed against the M. leprae-specific phenolic glycolipid-I or its synthetic disaccharide analogues. Antibody titre correlates with bacillary load, giving high sensitivity in multibacillary disease and low sensitivity in paucibacillary disease.

Technology
Serology (Antibody) · ELISA
What it measures
IgM against phenolic glycolipid-I
Developer
Multiple laboratories
Specimen
Venous blood
Development status
LDT with clinical validation
Regulatory status
None / RUO
Intended use
Measurement of infection burden and seroprevalence in populations and contacts
Main limitation
Antibody levels follow bacillary load, and a positive result in endemic populations predicts disease poorly.
Linked publications
287
TPP-1, confirming leprosy
33.5 of 100, low alignment
TPP-2, infection in contacts
25.5 of 100, low alignment
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