nonprotein nitrogen

nonprotein nitrogen definition - medical

non·pro·tein nitrogen (nŏn-prōˈtēnˌ)

noun
Abbr. NPN The nitrogen content of substances other than protein in blood, tissues, and waste materials.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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