Mean cell volume MCV - individual cell size is the best index for classifying anemias.
This index expresses the volume occupied by a single erythrocyte and is a measure in cubic micrometers femtoliters, or fL of the mean volume. The MCV is calculated manually by dividing the volume of packed red cells hematocrit by the number of red cells, using the formula:.
If it is greater than f L, the RBCs will be macrocytic. If it is within the normal range, the RBCs will be normocytic.
What is MPV blood test?
The chief source of error in the MCV is the considerable error in the manual red cell count, if used. The MCV is now considered the most reliable automated index and is probably the most effective discriminant for the classification of anemias.
When there is a decrease in the mean corpuscular volume, the erythrocytes are microcytic, or smaller than normal. Microcytic red blood cells are seen in iron deficiency anemia, lead poisoning, and thalassemia.
In microcytic anemia with marked iron deficiency, it may be 60 to 70 fL. An increase in the mean corpuscular volume indicates that the red blood cells are macrocytic, or larger than normal.
Pernicious anemia is associated with macrocytic red blood cells. In some macrocytic anemias e.
When the mean corpuscular volume is within normal range, the red blood cells are normocytic, or of normal size. Aplastic, hemolytic, and temporary blood loss anemia are associated with red blood cells that are normal in size.
Clear all. Units of measurement. The MCV in normal adults is between 80 and 96 fL.
Antibody to cyclic citrullinated peptide anti-CCP. P1NP total - Total procollagen type 1 amino-terminal propeptide.