Detecting Xylazine in Urine and Food: A New Way with Antibodies

Xylazine, often found in illegal opioids and used as a vet sedative, is a dangerous substance. It’s linked to drug crimes and health risks, even appearing in food samples. Scientists found a quick way to spot it using antibodies. They designed four new haptens, like tiny signals for the antibodies to recognize. From ten monoclonal antibodies, one stood out, mAb 7H5, which had a strong attraction to Xylazine and hardly any reaction to similar drugs.

These scientists then made two tests: an indirect competitive ELISA and a lateral flow immunoassay. The ELISA test had a detection limit of 0. 10-2. 24 micrograms per liter in various human urine and food samples. The lateral flow test had a visual detection limit of 0. 10-1. 80 micrograms per liter. Both tests were precise and reliable. By understanding how the antibodies recognize Xylazine at a molecular level, scientists developed powerful tools for quick detection in urine and food.

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