Botulinum toxin field assays evaluated using cosmetic botox preparations

Area of Science:

• Analytical Chemistry
• Biotechnology
• Toxicology

Background:

• Commercial rapid tests for botulinum toxins (BoNTs) lack independent evaluation.
• Standardized positive controls are needed for accurate assessment of these diagnostic kits.

Purpose of the Study:

• To evaluate the performance of commercially available BoNT detection kits.
• To assess the suitability of cosmetic BoNT preparations as positive controls for test validation.

Main Methods:

• Evaluation of commercial BoNT detection kits using column-based (ABICAP) and lateral flow technologies.
• Utilized cosmetic preparations (Botox®, Neurobloc®) as positive controls.
• Compared kit performance against an in-house ELISA reference method.

Main Results:

• Cosmetic BoNT preparations demonstrated sufficient toxin content for use as positive controls.
• The ABICAP column system proved to be a viable alternative to in-house ELISA.
• Most evaluated lateral flow tests failed to detect BoNT and exhibited design flaws.

Conclusions:

• Cosmetic BoNT products are suitable and accessible positive controls for evaluating rapid BoNT detection tests.
• Current lateral flow BoNT tests are unsatisfactory, whereas the ABICAP system offers a reliable alternative to ELISA.