Is your urine always nearly colourless? How much urine do you void per day? How much do you drink water per day? A more useful measure of U-Osmol would be a morning test, the urine produced in your bladder during one hour in the morning. Have your serum osmolality and Na+ been measured with U-Osmol? Water drinking should be avoided before the tests. Your laboratory stuff can give advice.
Hello,
The osmolality urine test the concentration of particles in urine. The normal osmolality taken randomly is 50 to 1200 milliosmoles per kilogram. So if the osmolality was done randomly then your lab values are normal.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.