A urine sodium test determines whether you’re properly hydrated. It can also evaluate your kidney function, particularly in terms of its sodium regulation property.
The amount of sodium in your urine can help your doctor look for sodium imbalances in your body. It can help your doctor further understand abnormal values on an electrolyte blood test for sodium. It can also help determine if your kidneys are working properly. Finally, this test can find out whether you’re drinking an insufficient or excessive amount of water.
For adults, normal urine sodium values are generally 20 mEq/L in a random urine sample and 40 to 220 mEq/L per day.
