![]() ![]() Two hundred cells are then counted and classified. To determine the differential, a drop of blood is thinly spread over a glass slide, air dried, and stained with a Romanofsky stain, most commonly the Wright or May-Grunewald-Giemsa technique. The latter are widely used, offering the advantage of higher accuracy and speed over manual techniques. ![]() White cells can be counted manually in specially designed chambers (Neubauer) or with automated counters. The simplest test is the WBC count and differential. Both quantitative and qualitative properties can be assessed in the laboratory. Leukocytes can be evaluated through several techniques of varying complexity and sophistication. ![]()
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