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A BUN, or blood urea nitrogen test, measures the amount of urea nitrogen in your blood. Urea nitrogen is a waste product that forms as your body breaks down proteins. It's carried in your blood and then removed by your kidneys when you urinate (pee).
Tests
An estimation of the glomerular filtration rate based on the clearance of creatinine, urea nitrogen and albumin after adjusting it for an individual's actual body surface area.
Tests
The determination of the amount of urea nitrogen present in a sample.
Tests
The determination of the ratio of urea-nitrogen to creatinine present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
The determination of the ratio of urea to creatinine present in a sample. The measurement may be expressed as a ratio or percentage.
