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خرید پکیج
تعداد آیتم قابل مشاهده باقیمانده : 3 مورد
نسخه الکترونیک
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Manual (spun) hematocrit

Manual (spun) hematocrit
This photo shows two anticoagulated blood-filled Wintrobe hematocrit tubes following high-speed centrifugation. The tube on the left is from an individual with a hematocrit of 38 percent (blue arrow). The tube on the right is from a 19-year-old female with essential thrombocytosis, a normal white blood cell count, and a platelet count of 5,000,000/microL. The extreme degree of thrombocytosis can be appreciated by the presence of a marked increase in the size of the "buffy coat" (white arrow). When the Wintrobe tube is filled to near capacity (upper arrows), and the white blood cell count is not markedly elevated, the platelet count can be estimated by the thickness of this layer, with each mm being equivalent to one million platelets/microL. In normal subjects, the buffy coat, which is comprised of white blood cells and platelets, is only minimally visible.
Courtesy of Stephen A Landaw, MD, PhD.
Graphic 68024 Version 6.0

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