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Absolute Reticulocyte Count & Reticulocyte Index. Evaluates bone marrow response to anemia, often in sickle cell patients. When to Use. Why Use. % of reticulocytes. %. Hematocrit. %. Normal hematocrit.
To calculate an absolute reticulocyte count, we use the following formula: Absolute reticulocyte count (thou/µL) = reticulocyte % (#/100) x RBC count (mill/µL) x 1000. or (even easier) Absolute reticulocyte count (thou/µL) = reticulocyte % x RBC count (mill/µL) x 10.
The equation is simple: ARC = Reticulocytes × Hematocrit / normal_Hematocrit. It uses the percentage of reticulocytes among red blood cells and one's hematocrit (Hct). The normal_Hematocrit is a default value of 45%, but if you wish, change it to the desired value.
2. Absolute Reticulocyte Count. The absolute reticulocyte count (ARC) is the actual number of reticulocytes in 1 L of whole blood. 3. Corrected Reticulocyte Count. In specimens with a low hematocrit, the percentage of reticulocytes may be falsely elevated because whole blood contains fewer RBCs.
The corrected reticulocyte count corrects for the degree of anemia that is present (how low the hemoglobin or hematocrit is), and is calculated by multiplying the absolute reticulocyte count by the hematocrit (or hemoglobin) divided by a "normal" hematocrit or hemoglobin:
Calculators: Absolute Reticulocyte Count-Merck Manual Professional Edition. Merck ManualProfessional Version. MEDICAL TOPICS RESOURCES DRUG INFO COMMENTARY PROCEDURES QUIZZES ABOUT US. MEDICAL TOPICS RESOURCES. Professional /. Clinical calculators /. Absolute Reticulocyte Count. In these topics. Evaluation of Anemia.
The absolute reticulocyte count and corrected reticulocyte percentage, as a marker of RBC production, provide an initial evaluation as to whether anemia is due to loss of RBCs or inadequate...
0 1 2 3. Equations used. ARC = ReticPercent * HCT / 45. Medical Calculators, Criteria Sets and Decision Trees.
Calculators: Absolute Reticulocyte Count-MSD Manual Professional Edition. MSD ManualProfessional Version. MEDICAL TOPICS RESOURCES NEWS PROCEDURES QUIZZES ABOUT US. MEDICAL TOPICS RESOURCES NEWS. Professional /. Clinical Calculators /. Absolute Reticulocyte Count. In these topics. Evaluation of Anemia.
Professional / Clinical Calculators / Absolute Reticulocyte Count. In these topics. Evaluation of Anemia. Brought to you by Merck & Co, Inc., Rahway, NJ, USA (known as MSD outside the US and Canada)—dedicated to using leading-edge science to save and improve lives around the world.