On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 * 10^12/L, and the hematocrit is 30%. Calculate the absolute reticulocyte count.

Question

Quizplus · Accepted Answer

Absolute reticulocyte count (ARC) = (Number of reticulocytes counted ÷ Total RBCs counted) × RBC count × Patient's hematocrit
ARC = (100 ÷ 1000) × 3.22 × 0.30 = 0.32 × 10^9/L or 0.32 x 10^12/L or 0.32 x 10^6/μL
Therefore, the best choice is A.

On a Standard Reticulocyte Preparation with New Methylene Blue, 100