Peripheral blood smear: Difference between revisions
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→Platelets: Giant |
→Red blood cells: Noted |
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| > 26% || Severe anisocytosis | | > 26% || Severe anisocytosis | ||
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When available automatic quantification of mean corpuscular volume (MCV) and red blood cell distribution width (RDW), usually as part of CBC panel, generally decides whether you will call the sample "'''normocytic'''" versus "microcytic"/"macrocytic" and/or "anisocytotic", even if it is not clearly visible in the microscope. If automated values are not available, compare RBC sizes to lymphocyte nuclei, which should normally be the same size. | When available, automatic quantification of mean corpuscular volume (MCV) and red blood cell (RBC) distribution width (RDW), usually as part of CBC panel, generally decides whether you will call the sample "'''normocytic'''" versus "microcytic"/"macrocytic" and/or "anisocytotic", even if it is not clearly visible in the microscope. If automated values are not available, compare RBC sizes to lymphocyte nuclei, which should normally be the same size. If mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC) are normal, but you still see multiple RBCs with central pallor greater than 50% of the diameter, you can report it as ''"Increased central pallor"'', and you may add ''"indicating iron deficiency"'' if it is compatible with the clinical history. | ||
Look for poikilocytosis (red blood cells of abnormal shapes): | Look for poikilocytosis (red blood cells of abnormal shapes): | ||