What does high MCV mean in blood test?
Mean corpuscular volume (MCV) laboratory test, as part of a standard complete blood count (CBC), is used along with other RBC indices (MCH and MCHC) to help classify the cause of anemia based on red cell morphology.
Low MCV. The MCV will be lower than normal when red blood cells are too small. This condition is called microcytic anemia. Microcytic anemia may be caused by: iron deficiency, which can be caused by poor dietary intake of iron, menstrual bleeding, or gastrointestinal bleeding.
- A normal platelet count ranges from 150,000 to 450,000 platelets per microliter of blood. Having more than 450,000 platelets is a condition called thrombocytosis; having less than 150,000 is known as thrombocytopenia. You get your platelet number from a routine blood test called a complete blood count (CBC).
- A low hemoglobin count is a commonly seen blood test result. Hemoglobin (Hb or Hgb) is a protein in red blood cells that carries oxygen throughout the body. If it gets more severe and causes symptoms, your low hemoglobin count may indicate you have anemia.
- The MCV will be lower than normal when red blood cells are too small. This condition is called microcytic anemia. Microcytic anemia may be caused by: iron deficiency, which can be caused by poor dietary intake of iron, menstrual bleeding, or gastrointestinal bleeding.
High MCH scores are commonly a sign of macrocytic anemia. This condition occurs when the blood cells are too big, which can be a result of not having enough vitamin B12 or folic acid in the body.
- A high hematocrit with a high RBC count and high hemoglobin indicates polycythemia. Some causes of a high hematocrit include: Dehydration—this is the most common cause of a high hematocrit. Polycythemia vera—a rare disease in which the body produces excess RBCs inappropriately.
- Polycythemia is an increased number of red blood cells in the blood. In polycythemia, the levels of hemoglobin (Hgb), hematocrit (Hct), or the red blood cell (RBC) count may be elevated when measured in the complete blood count (CBC), as compared to normal.
- The MCH is a calculated value derived from the measurement of hemoglobin and the red cell count. (The hemoglobin value is the amount of hemoglobin in a volume of blood while the red cell count is the number of red blood cells in a volume of blood.) It is a standard part of the complete blood count.
Updated: 12th November 2019