Hydrostatic Body Fat Testing (Hydro-Densitometry): According to research, "Hydrostatic Body Fat Testing "is still the "Gold Standard" to which all methods of body fat testing still compare themselves. FitnessWave has been the pioneer in hydrostatic testing for nearly twenty years and we strive to provide accurate and affordable hydrostatic testing to our clients with a professional touch. FitnessWave makes hydrostatic body fat testing a fun experience for the whole family.