Urine Osmolality
Urine osmolality evaluates total solute concentration in urine, validating how effectively the kidneys concentrate and conserve water.
Test your personal value
Enter the number from your lab report to instantly see how it compares to reference ranges.
Physiological Reference Ranges
The ranges below represent standard adult physiological values. Your laboratory's printed reference range always takes precedence.
300 – 900 mOsm/kg
300 – 900 mOsm/kg
300 – 900 mOsm/kg
What does a low result mean?
A lower reading (near 300 mOsm/kg) indicates nicely diluted urine following plentiful plain water intake.
What does a high result mean?
An elevated reading (approaching 800-900 mOsm/kg) is standard upon waking or during warm weather, confirming active renal water conservation.
Questions ready for your doctor
Bring these questions to your next consultation to discuss with your healthcare practitioner:
- Does this confirm that my kidneys adapt smoothly to my fluid drinking patterns?
- Does this align consistently with my thirst and daily hydration?
- What daily water intake best fits my lifestyle?
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Important information — Medical notice
ScanMyLab is for informational purposes only. It does not provide a diagnosis and never replaces the advice of your doctor or laboratory.