Techniques of Specimen Collection and Preparation
Differentiation of the peripheral blood is still the most important procedure in the diagnosis of hematologic disorders. The necessary blood smears are usually prepared from venous blood anticoagulated with EDTA (several brands of collecting tube containing EDTA are available commercially). However, many special tests require that the blood be taken from the fingertip or earlobe and smeared directly onto a glass sHde, with no chemicals added. The slide must be absolutely clean to avoid the introduction of artifacts. Slides are cleaned most effectively by degreasing in alcohol for 24 h, drying with a lint-free cloth, and final wiping with a chamois cloth (as a shortcut, the slide may be scrubbed with 96% alcohol and wiped dry).
KeywordsDust Osteoporosis Heparin Respiration Sedimentation
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- 1.The interested reader is referred to the Color Atlas of the Clinical Histopathology of Bone Marrow and Bone by R. Burkhardt; Springer, Berlin Heidelberg New York 1970Google Scholar