How do you calculate reticulocyte percentage?

How do you calculate reticulocyte percentage?

Because the reticulocyte count is expressed as a percentage of total RBCs, it must be corrected according to the extent of anemia with the following formula: reticulocyte % × (patient Hct/normal Hct) = corrected reticulocyte count.

How is corrected reticulocyte count calculated?

The corrected reticulocyte count = reticulocyte % x (Hgb/15). This formula “corrects” for hemoglobin – meaning that it will show you if the patient is making enough reticulocytes for the degree of anemia present. As the hemoglobin drops, you need to make more reticulocytes to get up to the normal range of 0.5 – 2.0%.

Why do we calculate corrected reticulocyte count?

The reticulocyte production index (RPI), also called a corrected reticulocyte count (CRC), is a calculated value used in the diagnosis of anemia. This calculation is necessary because the raw reticulocyte count is misleading in anemic patients.

What is the normal percentage of reticulocytes?

around 0.5% to 2.5%
A normal result for healthy adults who are not anemic is around 0.5% to 2.5%.

How do you calculate absolute reticulocyte concentration?

The absolute reticulocyte count is 120 thou/µL (8/100 x 1.5 x 1000 or 8 x 1.5 x 10), which indicates a mild regenerative response and you would consider causes of blood loss or hemolysis for the severe anemia.

How do you read a reticulocyte count?

Normal. The reticulocyte count is given as the percentage of red blood cells that are reticulocytes (the number of reticulocytes divided by the total number of red blood cells, multiplied by 100).

What does a high RET he mean?

RET-He is used for monitoring erythropoietin (EPO) and/or IV iron therapy. If the value increases it indicates the therapy is having a positive effect.

What does a high reticulocyte percentage mean?

A high reticulocyte count may mean more red blood cells are being made by the bone marrow. This can occur after a lot of bleeding, a move to a high altitude, or certain types of anemia.

How do you read reticulocyte results?

Your doctor may need to order additional tests to help interpret your reticulocyte count. The results are reported as the percentage of reticulocytes divided by the total number of red blood cells times 100. The reference range, or healthy range, of the reticulocyte percentage in adults is 0.5 percent to 1.5 percent.

How do you count Retics?


  1. Count RBCs and reticulocytes as well.
  2. If RBCs are 1000 and reticulocytes are 8. Retics % count formula.
  3. Then Reticulocytes = 8/1000 x 100 = 0.8%