• synonyms
undetermined nitrogen in Medicine

undetermined nitrogen

  1. The concentration of nitrogen in blood or urine, for example, that can be directly estimated, excluding the nitrogen in such substances as urea, uric acid, or amino acids.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.