Volhard test

Vol·hard test

a test for renal function: the patient drinks 1500 mL of water on an empty stomach; if the patient was not dehydrated beforehand and the kidneys are normal, this fluid will be excreted by the end of 4 hours with specific gravity of the urine ranging from 1.001-1.004.


Franz, German physician, 1872-1950.
Volhard test - for renal function.