Blood smear examination. Preparation of blood smear. There are three types of blood smears: The cover glass smear. The wedge smear . The spun smear. The are two additional types of blood smear used for specific purposes Buffy coat smear for WBCs < 1.0×10 9 /L
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Observe one field and record the number of WBC according to the different type then turn to another field in the snake-liked direction
*avoid repeat or miss some cells
Cytoplasm: medium blue
Granules: small agranular
large a few
Nucleus: dark blue \round
(Increased bands Means acute infection, usually bacterial).
Neutrophilic leukocytosis neutrophilia
Lymphocytic leukocytosis lymphocytosis
Eosinophilic leukocytosis eosinophilia
Monocytic leukocytosis monocytosis
Basophilic leukocytosis basophilia