KIDNEY & LIVER
Blood Urea Nitrogen
Also known as BUN
What it is
BUN measures nitrogen from urea in the blood, a product of protein metabolism cleared by the kidneys.
Why it matters
BUN complements creatinine and eGFR. Elevated BUN can signal dehydration, GI bleeding, or high protein intake in addition to kidney issues.
Range GPLX watches for
GPLX watches for BUN within the lab reference range.
This educational range is not a personal diagnostic threshold. Your physician interprets your result in context of your full biomarker panel, medications, symptoms, and history.
What abnormal values can suggest
If low
A low BUN value can suggest low protein intake, liver disease, or over-hydration.
If high
A high BUN value can suggest dehydration, high protein intake, or kidney impairment.
This marker is reviewed when clinically appropriate as part of physician-directed labs. Membership is $39.99/month; consultation is $30.
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