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dinitrophenylhydrazine test

[dī-nī′trō-fĕn′əl-hī′drə-zēn′, -zĭn, -fē′nəl-]
n.
  1. A test to determine the presence of ketoacids; used in screening for maple syrup urine disease.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.