Leprosy Diagnostic Landscape

OnSite Leprosy Ab Rapid Test

A commercially manufactured colloidal gold lateral flow assay using the same antigen pair as the OrangeLife device. It was supplied for research use only, and CTK Biotech no longer lists it.

Technology
Serology (Antibody) · Lateral flow
What it measures
Antibodies to NDO and LID-1
Developer
CTK Biotech (Poway, CA, USA)
Specimen
Capillary blood
Development status
Commercial RUO with clinical validation
Regulatory status
None / RUO
Intended use
Point-of-care serological detection of anti-M. leprae antibodies
Main limitation
For research use only, and it may no longer be on sale.
Availability
No longer available. CTK Biotech does not list a leprosy test among its products (checked 18 September 2026).
Linked publications
2
TPP-1, confirming leprosy
60.0 of 100, partial alignment
TPP-2, infection in contacts
64.0 of 100, partial alignment
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