hematometry

[hē′mə-tŏmĭ-trē]
n.
  1. Examination of the blood to determine the total number and relative proportions of various blood cells and the percentage of hemoglobin.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.