A Seca scan refers to body composition analysis performed on a medical-grade device made by Seca, a manufacturer of clinical scales and measurement equipment. Like other BIA devices, it estimates fat mass, lean mass, and related metrics by measuring electrical impedance through the body, and is commonly used in clinical settings to track body composition changes during GLP-1 treatment. A 2018 study comparing the seca mBCA 515 with DXA found close average agreement for fat mass but concluded the two methods are not equivalent (Day et al., 2018 (external link)).
Seca scan
A medical-grade body composition measurement device made by Seca, using bioelectrical impedance to estimate fat and lean mass.
Updated Sep 26, 2026
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