differential blood count

[ dĭf′ə-rĕnshəl ]

n.

An estimate, based on cell counts in a representative sample, of the percentage of white blood cell types that make up the total white blood cell count.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.