Do You Know What Is the Hematocrit?

What is the hematocrit?

Hematocrit is the ratio of blood cells to blood. Blood cell volume (HCT) is expressed as a percentage.

For example, 25 percent of a blood cell volume means 25 milliliters of red blood cells in 100 milliliters of blood. The normal range of blood cell capacity depends on age and the sex of the individual after puberty.

  • Newborns: 55% to 68%
  • One week of age: 47% to 65%
  • One month of age: 37% to 49%
  • Three months of age: 30% to 36%
  • One year of age: 29% to 41%
  • Ten years of age: 36% to 40%
  • Adult males: 42% to 54%
  • Adult females: 38% to 46%
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