blood urea nitrogen
Nitrogen in the form of urea in the blood or serum, used as a indicator of kidney function.
Have You Ever Mixed Up These Misunderstood Emoji?Sometimes it's worth it to know that the squirrel emoji, , you love so much isn't technically a squirrel ...
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.