Urine Osmolality Normal Range. The urine osmolality is the best measure of urine concentration with high values indicating maximally concentrated urine and low values very dilute urine. Diabetes insipidus after traumatic brain injury. Urine Protein to Creatinine Ratio. This is achieved by controlling water input by thirst and water output by ADH control in the kidneys.
This suggests an osmotic threshold of 282 mOsmkg and 291 mOsmkg for fullterm and preterm babies respectively. A normal result is typically 500 to 850 mOsmkg but may be slightly higher or. Comparison of serum and urine osmolalities may help to determine the cause of polyuria to diagnose SIADH and to distinguish pre-renal from renal causes of impaired renal function. Diabetes insipidus after traumatic brain injury. Can range from 50 - 1400 mOsmkg water but average is about 500 - 800 mOsm. Urine osmolality will vary more widely as the renal water loss is.
Normal urine osmolality Age 0-11 months.
Part of our series on hyponatraemia - where we tackle the causes of low sodium using a systematic approach. These values are different from the 285290 mOsmkg of adolescents and adults. Urine Osmolality in a Hyponatremic Patient In the context of hyponatremia an osmolality of 100 mOsmkg is a cut off for osmolality that is usually used. This suggests an osmotic threshold of 282 mOsmkg and 291 mOsmkg for fullterm and preterm babies respectively. Hence in response to the administration of dDAVP the average urine flow rate is close to 05 mLmin. Isosthenuric urine has an osmolality similar to plasma approximately 300 to 320 mOsmkg.