Final answer:
To calculate the bone marrow M:E ratio, a minimum of b. 200 cells must be counted and classified. This number ensures an accurate and statistically valid assessment of bone marrow cell composition.
Step-by-step explanation:
Calculation of a bone marrow M:E ratio is an important diagnostic parameter in hematology. It involves counting and classifying bone marrow cells to assess the ratio between myeloid (granulocyte/monocyte precursors) and erythroid (red blood cell precursors) cells. The correct answer to the question is 'At least 200 cells must be counted and classified to calculate the M:E ratio.' This ensures statistical validity and accurate representation of the bone marrow composition.
Although different labs may have varying protocols, a minimum of 200 cells is a commonly accepted practice. This count provides a snapshot of the marrow's cellular components and can indicate normal or abnormal states.To calculate the bone marrow M:E ratio, a minimum of b. 200 cells must be counted and classified. This number ensures an accurate and statistically valid assessment of bone marrow cell composition.