High Sodium: what it means
A Sodium result above the normal range is considered high. Here is what a raised Sodium can point to, and when it is worth discussing with a doctor.
Reference range: 135–145 mmol/L; critically low <125 or high >155
Understand your full resultWhat a high Sodium can mean
- Dehydration — the most common cause; insufficient water intake or excessive loss (vomiting, diarrhoea, fever).
- Diabetes insipidus — failure to concentrate urine.
- Excess sodium intake (rare in normal kidneys) — e.g. salt-water ingestion.
- Some medications — corticosteroids, hypertonic saline.
When to discuss with a doctor
Sodium outside 130–150 mmol/L warrants a primary-care or urgent visit — correction must be gradual because rapid changes (especially raising sodium too fast in chronic hyponatraemia) can cause irreversible neurological injury. Acute severe hyponatraemia (<120) with confusion is an emergency. Mediora.AI flags critical values directly in the report.
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.