High Urea: what it means
A Urea result above the normal range is considered high. Here is what a raised Urea can point to, and when it is worth discussing with a doctor.
Reference range: ~2.5–7.8 mmol/L (reported as BUN in mg/dL in the US); reflects kidney function, hydration and protein — read with creatinine
Understand your full resultWhat a high Urea can mean
- Dehydration — a very common cause; urea rises more than creatinine (a high urea-to-creatinine ratio).
- Reduced kidney function — with a raised creatinine and low eGFR.
- Gastrointestinal bleeding — blood digested as protein raises urea.
- High-protein diet, tissue breakdown, some steroids.
- Heart failure — reduced kidney perfusion.
When to discuss with a doctor
Urea is read together with creatinine and eGFR, not alone, because on its own it cannot separate a kidney problem from dehydration or diet. A raised urea with a normal creatinine most often points to dehydration and improves with fluids. A raised urea with a raised creatinine and a low eGFR points to reduced kidney function needing assessment. A disproportionately high urea can also be a clue to a gastrointestinal bleed when there are other signs. Mediora.AI shows urea alongside creatinine, eGFR and sodium so the pattern — kidney versus hydration — is visible, and reconciles the urea/BUN naming; the clinical interpretation belongs with your doctor.
Conditions this can relate to
Keep reading
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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.