What is a normal blood count?

Normal red blood cell counts are usually between 3.9 and 5.03 trillion cells per liter for women or between 4.32 and 5.72 trillion cells per liter for men, reports Mayo Clinic. Normal white blood cell counts fall between 3.5 and 10.5 billion cells per liter.

Platelet counts are normally between 150 to 450 billion per liter, according to Mayo Clinic. The normal range for a blood cell count is not exact and varies slightly for individuals, says Cancer Research UK. If a patient is otherwise healthy but has blood count results outside the normal range, it does not necessarily indicate a problem, states Mayo Clinic.