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ProPhase Labs, Inc. is a medical science and technology company, which engages in the research, development, manufacture, distribution, marketing, and sale of over-the-counter consumer healthcare products and dietary supplements. It operates through the Diagnostic Services and Consumer Products segment. The Diagnostic Services segment includes COVID-19 and other diagnostic testing services. The Consumer Products segment consists of the manufacturing, retail customers, and personal genomics products and services. The company was founded by Guy J. Quigley and Charles A. Phillips in July 1989 and is headquartered in Garden City, NY.