Blood Urea Nitrogen

CalculatedFiller

Blood urea expressed as its nitrogen content.

The same measurement as blood urea, divided by 2.14 and counted again.

This one isn’t a test

Blood Urea Nitrogen = Blood Urea ÷ 2.14

No extra sample was taken for this and no extra assay was run. It is arithmetic on numbers already on your report — but it still adds a line to the advertised test count.

Computed from Blood Urea.

That does not make the number useless — eGFR is calculated and doctors act on it every day. It means it should not be counted as a separate test when you are comparing what a package costs.

Calculated from this result

Once a lab has this measurement, these lines cost it nothing to add.

Part of

How we rate it — Filler

Rarely changes anything for someone with no symptoms.

This rating and the description above were written against published screening guidelines by someone who is not a clinician, and are awaiting review by one. We would rather say that than imply an authority we do not have.

Check-ups that include it

In 70 of the 78check-ups we track — 90%. Cheapest first.

and 58 more.

Also sold as

Every one of these names refers to this same test. Resolving them to one canonical entry is what makes an honest comparison possible.

bun · bun urea nitrogen · blood urea nitrogen

Information here is for comparing packages, not for diagnosing yourself. Talk to a doctor about which tests you actually need.