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Multiple Choice

The platelet histogram has a fitted curve spanning which range?

The platelet histogram shows how platelets vary in size, plotting volume on the x-axis and counting how many platelets fall into each size range. The curve fitted to that distribution is drawn across the entire range the analyzer uses to categorize platelets. Platelets can be very small or quite large (macroplatelets), so to accurately describe the distribution, the curve must cover from the smallest detectable platelet volume to the largest one the instrument can measure. In most analyzers this range is about 1 to 70 fL, so the fitted curve spans 1-70 fL. Narrower ranges would miss part of the distribution, especially the larger platelets, and give an incomplete picture of platelet size variation.

The platelet histogram shows how platelets vary in size, plotting volume on the x-axis and counting how many platelets fall into each size range. The curve fitted to that distribution is drawn across the entire range the analyzer uses to categorize platelets. Platelets can be very small or quite large (macroplatelets), so to accurately describe the distribution, the curve must cover from the smallest detectable platelet volume to the largest one the instrument can measure. In most analyzers this range is about 1 to 70 fL, so the fitted curve spans 1-70 fL. Narrower ranges would miss part of the distribution, especially the larger platelets, and give an incomplete picture of platelet size variation.