Catalyst Precision Health Launches Men’s Longevity Service Combining In-Home Testing and Physician House Calls

Catalyst Precision Health has launched a new longevity service for men that brings together in-home lab testing, physician house calls, and continuous personalized care under one model. The company said the service is designed to address gaps in men’s health by replacing fragmented care pathways with a single physician-led offering.

Founded by Mt. Sinai-trained physician Westley Spiro, M.D., and Matt Renart, the Brooklyn-based company focuses on personalized protocols built around each patient’s biology. Its model includes biomarker testing across hormones, metabolic health, and performance, with regular retesting and treatment adjustments over time.

Catalyst said its service is aimed at men seeking more proactive management of changes in energy, performance, hormones, and broader health markers. The offering includes direct physician access, longitudinal tracking, and physician-guided protocols, including testosterone therapy and other treatments where appropriate.

The company is entering a market shaped by growing demand for personalized and preventive health services. In its launch announcement, Catalyst argues that existing options often require patients to combine at-home test kits, telehealth consults, and clinic-based care on their own, with limited continuity across providers. Its pitch is a more integrated, doctor-led service delivered in the home.