Hydrostatic weighing is considered one of the most accurate ways of determining percentage body fat. One limitation might be that it might still be gendered! [https://en.wikipedia.org/wiki/Hydrostatic_weighing Wikipedia's article on hydrostatic] weighing describes using gender to estimate residual lung volume, which is necessary. (Residual lung volume might also be determined more directly e.g. via gas dilution.)
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Hydrostatic weighing is considered one of the most accurate ways of determining percentage body fat. One limitation might be that it might still be gendered! [https://en.wikipedia.org/wiki/Hydrostatic_weighing Wikipedia's article on hydrostatic] weighing describes using gender to estimate residual lung volume, which is necessary. (Residual lung volume might also be determined more directly e.g. via gas dilution.) There are some local services ([https://thefitlabsd.com/bodycompositionanalysis/ 1], [https://www.bodyfattestsandiego.com/ 2]) I might consider.