laboratory diagnostic - hormones - others - Aldosterone urines, non acidified 24hr urine collection 20ml, frozen, The sample must be frozen within 4 hour after collection and must be sent in the frozen samples container(!),DIET: Our reference values are only valid for a normal sodium diet (80-250 mEq/24hrs of natriuresis). CIRCADIAN RHYTHM: This biological parameter has a circadian rhythm (maximum concentration in morning), with a sufficiently significant amplitude to have a significant influence on the clinical interpretation; Specify diuresis, Radioimmunoassay, ssso, todylaboratories®, bmn, code L16LD1842