Kay Scientific in Chula Vista distributes FDA-cleared, CLIA-waived point-of-care drug and alcohol test kits from its Main Street headquarters in the Broadway Corridor. The company's rapid-result screening panels serve the same employer and clinical markets as Fastest Labs of Chula Vista, though Kay Scientific operates as a wholesale distributor rather than an on-site specimen-collection lab. Founded in 2022 as a Black-, Latina-, and women-owned enterprise, the operation stocks multi-panel urine cups, oral-fluid swabs, and COVID-19 antigen kits that carry both 510(k) clearance and CLIA-waiver status for point-of-care deployment. Bulk orders ship to occupational-health clinics, DOT-regulated transportation firms, and medical-training programs including Pima Medical Institute on the same Main Street corridor. The catalog's flagship 10-panel ECO-II immunoassay cup screens for amphetamines, barbiturates, benzodiazepines, cocaine, marijuana, methadone, methamphetamine, opiates, oxycodone, and phencyclidine in a single integrated cartridge.