van Vonderen, I K Intra- and interindividual variation in urine osmolality and urine specific gravity in healthy pet dogs of various ages. [electronic resource] - Journal of veterinary internal medicine - 30-5 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0891-6640 Standard No.: 10.1111/j.1939-1676.1997.tb00070.x doi Subjects--Topical Terms: Adrenal Cortex Hormones--urineAdrenocorticotropic Hormone--bloodAging--physiologyAnimalsCircadian Rhythm--physiologyCreatinine--urineDogs--bloodFemaleHydrocortisone--bloodHypothalamo-Hypophyseal System--physiologyMaleOsmolar ConcentrationPituitary-Adrenal System--physiologyReference ValuesSex CharacteristicsSpecific GravitySurveys and QuestionnairesTime FactorsUrine--chemistry