Urine osmolality is a measure of urine concentration,[1] in which large values indicate concentrated urine and small values indicate diluted urine. Consumption of water (including water contained in food) affects the osmolality of urine.[2] Osmolality is measured by osmometer, which evaluates the freezing point depression of a solution and supplies results as milliosmoles per kilogram of water while specific gravity is measured by colorimetric strips, refractometer, hydrometer and pyknometer. In healthy humans with restricted fluid intake, urine osmolality should be greater than 800 mOsm/kg, while a 24-hour urine osmolality should average between 500 and 800 mOsm/kg.[citation needed]
Urine osmolality
Urine osmolality in humans can range from approximately 50 to 1200 mOsm/kg, depending on whether the person has recently drunk a large quantity of water (the lower number) or has gone without water for a long time (the higher number).[2] Plasma osmolality with typical fluid intake often averages approximately 290 mOsm/kg H2O in humans.[2]
In other animalsedit
Some mammals are capable of higher osmolality than humans. This includes rats (approximately 3,000 mOsm/kg H2O), hamsters and mice (approximately 4,000 mOsm/kg H2O), and chinchillas (approximately 7,600 mOsm/kg H2O)
^"MedlinePlus Medical Encyclopedia: Osmolality - urine". Retrieved 2009-03-29.
^ abcSands, Jeff M.; Layton, Harold E. (2014-01-01). "Advances in Understanding the Urine-Concentrating Mechanism". Annual Review of Physiology. 76 (1): 387–409. doi:10.1146/annurev-physiol-021113-170350. PMID 24245944. – via Annual Reviews (subscription required)
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urine, osmolality, measure, urine, concentration, which, large, values, indicate, concentrated, urine, small, values, indicate, diluted, urine, consumption, water, including, water, contained, food, affects, osmolality, urine, osmolality, measured, osmometer, . Urine osmolality is a measure of urine concentration 1 in which large values indicate concentrated urine and small values indicate diluted urine Consumption of water including water contained in food affects the osmolality of urine 2 Osmolality is measured by osmometer which evaluates the freezing point depression of a solution and supplies results as milliosmoles per kilogram of water while specific gravity is measured by colorimetric strips refractometer hydrometer and pyknometer In healthy humans with restricted fluid intake urine osmolality should be greater than 800 mOsm kg while a 24 hour urine osmolality should average between 500 and 800 mOsm kg citation needed Urine osmolality Urine osmolality in humans can range from approximately 50 to 1200 mOsm kg depending on whether the person has recently drunk a large quantity of water the lower number or has gone without water for a long time the higher number 2 Plasma osmolality with typical fluid intake often averages approximately 290 mOsm kg H2O in humans 2 In other animals editSome mammals are capable of higher osmolality than humans This includes rats approximately 3 000 mOsm kg H2O hamsters and mice approximately 4 000 mOsm kg H2O and chinchillas approximately 7 600 mOsm kg H2O See also editPlasma osmolalityReferences edit MedlinePlus Medical Encyclopedia Osmolality urine Retrieved 2009 03 29 a b c Sands Jeff M Layton Harold E 2014 01 01 Advances in Understanding the Urine Concentrating Mechanism Annual Review of Physiology 76 1 387 409 doi 10 1146 annurev physiol 021113 170350 PMID 24245944 via Annual Reviews subscription required nbsp This medical diagnostic article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Urine osmolality amp oldid 1170164530, wikipedia, wiki, book, books, library,
