2 doctors weighed in:

My bun level is 16mg/dl and my creatinine 0.62 mg/dl normals but bun/creatinine is 26.1 should I be worried? I was fasting. Other blood & urine ok!

2 doctors weighed in
Dr. Michael Dugan
Internal Medicine - Hematology
1 doctor agrees

In brief: Nope

The ratio is high due to a relative increase in the BUN with a perfectly normal cr. You may have been a bit dehydrated with the fast.
No issue here.

In brief: Nope

The ratio is high due to a relative increase in the BUN with a perfectly normal cr. You may have been a bit dehydrated with the fast.
No issue here.
Dr. Michael Dugan
Dr. Michael Dugan
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