High Urine sodium: what it means
A Urine sodium result above the normal range is considered high. Here is what a raised Urine sodium can point to, and when it is worth discussing with a doctor.
Reference range: no single normal range — depends on salt intake and hydration; used to interpret sodium disorders and kidney failure, where a low value suggests the kidney is holding onto salt
Understand your full resultWhat a high Urine sodium can mean
- Salt loss through the kidney — diuretic drugs, certain kidney tubular problems, or adrenal insufficiency (Addison's).
- SIADH — in the context of a low blood sodium, a urine sodium that is not low supports this diagnosis.
- Acute kidney injury from kidney tissue damage — as opposed to poor blood flow.
When to discuss with a doctor
Urine sodium is a doctor's tool used to interpret a specific problem — most often a low blood sodium or acute kidney injury — rather than a test to act on directly. In a low blood sodium, it helps sort out whether the person is volume-depleted (kidneys conserving salt, urine sodium low) or has SIADH or salt loss, which changes treatment completely — and treating a low sodium the wrong way, or too fast, can be harmful. In kidney injury, it helps distinguish a kidney short of blood flow from one that is damaged. It is always read alongside the blood sodium, hydration status and the clinical picture. Mediora.AI can show urine sodium alongside blood sodium and osmolality so the pattern is visible together, but this test is interpreted within a clinical assessment by your doctor.
Conditions this can relate to
Keep reading
One value is a snapshot. Upload the full test to see every marker explained together.
Upload your test - freeMediora.AI is informational - interpretation, not a diagnosis. A single out-of-range value is common and often benign; always discuss decisions with your doctor.