What is MCV in CBC

Mean corpuscular volume (MCV) Overview

Mean corpuscular volume (MCV) is a measurement that provides information about the average size of red blood cells in a blood sample. It is one of the parameters measured in a complete blood count (CBC) test. MCV is typically reported in femtoliters (fL).

MCV can help in the diagnosis and classification of different types of anemia, a condition characterized by a decrease in the number of red blood cells or a decrease in hemoglobin levels. The MCV value is used to differentiate between different types of anemia, primarily based on the size of the red blood cells.

Here are the general classifications based on MCV:

1. Microcytic anemia: MCV below the normal range (less than 80 fL). This indicates that the red blood cells are smaller than normal. Microcytic anemia can be seen in conditions such as iron deficiency anemia and thalassemia.

2. Normocytic anemia: MCV within the normal range (80-100 fL). In normocytic anemia, the size of the red blood cells is considered normal, but the number or hemoglobin content may be reduced. Causes of normocytic anemia include chronic diseases, kidney disease, and certain types of anemia caused by bone marrow disorders.

3. Macrocytic anemia: MCV above the normal range (greater than 100 fL). This indicates that the red blood cells are larger than normal. Macrocytic anemia can be seen in conditions such as vitamin B12 deficiency, folate deficiency, and certain medications.

It's important to note that MCV is just one parameter among many that are evaluated in the context of a complete blood count. It is often interpreted alongside other red blood cell indices, such as mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC), to provide a more comprehensive understanding of the underlying condition.

If you have specific concerns about your MCV value or any other aspect of your blood test results, it's recommended to consult with a healthcare professional who can provide a proper evaluation and interpretation based on your individual circumstances