ASCP MLS Hematology Exam Study Guide | Questions with 100% Correct Answers | Verified | 58 Pages

Insufficient centrifugation will result in: A. A false increase in hematocrit (Hct) value B. A false decrease in Hct value C. No effect on Hct value D. All of these options, depending on the patient - A. Insufficient centrifugation does not pack down the red blood cells; therefore, the Hct, which is the volume of packed cells, will increase. Variation in red cell size observed on the peripheral smear is described as: A. Anisocytosis B. Hypochromia C. Poikilocytosis D. Pleocytosis - A. A mature erythrocyte is approximately 7-8 μm in diameter. Variation in normal size is denoted by the term anisocytosis. Hypochromia is a term that indicates increased central pallor in erythrocytes, and poikilocytosis denotes variation in red cell shape. Which of the following is the preferable site for bone marrow aspiration and biopsy in an adult? A. Iliac crest B. Sternum C. Tibia D. Spinous processes of a vertebra - A. The iliac crest is the most frequently used site for bone marrow aspiration and biopsy. This site is thesafest and most easily accessible, with the bone just beneath the skin, and neither blood vessels nor nerves are in the vicinity. Mean cell volume (MCV) is calculated using the following formula: