Enumeration of platelets.
A correlation of the enumeration of platelets in peripheral smears with platelet counts performed by a direct method is presented. A ratio of 1 platelet per oil-immersion field for every 21,000 platelets of the chamber count indicates the normal average range of platelets to be approximately 7--21 per oil-immersion field.
D001772:Blood Cell Count / Q000379:methods; D001792:Blood Platelets; D006801:Humans