Blood Urea— Normal Range & What Your Result Means

Kidney waste product

Normal Blood Urea range (Urea, mg/dL)

  • Adults15–45 mg/dL

Ranges are typical adult values and vary between labs. Use the range on your own report.

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What is Blood Urea (Urea)?

Blood Urea is measured as part of a kidney function panel. Your blood urea level is normal.

What does a high Blood Urea mean?

Elevated urea is similar to high BUN — suggests the kidneys may not be clearing waste efficiently. Dehydration is also a common cause.

What does a low Blood Urea mean?

Low urea levels are rarely significant.

Understand your whole report, not just one number

A single value rarely tells the full story — Blood Urea is best read alongside the rest of your panel. Paste your values or upload your report and get a plain-English explanation of every marker, with the important results flagged.

Blood Urea: frequently asked questions

What is a normal Blood Urea level?

A normal Blood Urea (Urea) level is 15–45 mg/dL for adults. Reference ranges vary slightly between laboratories, so always compare against the range printed on your own report.

What does a high Blood Urea mean?

Elevated urea is similar to high BUN — suggests the kidneys may not be clearing waste efficiently. Dehydration is also a common cause.

What does a low Blood Urea mean?

Low urea levels are rarely significant.

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