DEXA Body Composition Scan

Custom Fit SF uses a Hologic DEXA scanner to measure body fat percentage by region, lean muscle mass by limb, visceral adipose tissue (VAT), and bone mineral density — all in a 6-minute scan. Each session includes an immediate 15–20 minute results review with a Registered Dietitian or Exercise Physiologist who interprets your numbers in the context of your health and fitness goals. DEXA is widely considered the gold standard for body composition analysis, offering precision that standard scale weight or bioelectrical impedance cannot match.

DEXA (Dual-Energy X-ray Absorptiometry) scanning delivers one of the most precise and comprehensive pictures of your body's composition available outside a research lab. At Custom Fit SF in San Francisco's Hayes Valley, a Hologic DEXA unit captures four key data dimensions in a single 6-minute scan: regional body fat percentage (trunk, arms, legs, android and gynoid zones), segmental lean muscle mass by individual limb, visceral adipose tissue (VAT) — the metabolically active fat surrounding the organs — and bone mineral density (BMD). VAT is considered a particularly useful metric because it is strongly associated with cardiometabolic risk factors including insulin resistance, elevated triglycerides, and systemic inflammation, even in individuals who appear lean by conventional metrics. Segmental lean mass data allows you to identify muscle imbalances between your left and right sides or between upper and lower body — information that is actionable for both training and injury-prevention purposes. What sets Custom Fit SF apart from standalone DEXA facilities is the same-day expert review built into every appointment. After your scan, a Registered Dietitian or ACSM-certified Exercise Physiologist walks through your results with you in a dedicated 15–20 minute consultation — explaining what the numbers mean, how you compare to reference ranges, and what targeted adjustments in nutrition or training may support improvement. This removes the friction of receiving a PDF report and having to interpret it independently. The studio offers single scans ($150), two-scan packs ($199), and four-scan packs ($349) — making quarterly tracking genuinely cost-effective. Members on the Tier 2 plan ($370/mo) receive unlimited DEXA included in their membership. Serial scanning every 8–12 weeks is a common approach for individuals adjusting body composition, since single data points provide a baseline while trends over time reveal whether interventions are working. With two locations in Hayes Valley and the Upper Market neighborhood, Custom Fit SF is convenient for San Francisco professionals, athletes, and health-focused residents across the city.