MCV--Mean Corpuscular Volume is the size of the RBC.
MCH--Mean Corpuscular Hemogloblin reflects the same increase or decrease as the MCV indicates. Measures the amount of hemoglobin in red blood cells. Low or high levels indicate anemia. It is low in iron deficiency anemia and high in B-12 and folic acid deficiency. However, there are many others reason.
The MCV is also increased in the following conditions below:
Megaloblastic Anemias (pernicious, folic acid deficiency, B12 deficiency)* Very common.
Reticulocytosis (acute blood loss response; reticulocytes are immature cells with a relatively large size compared to a mature red blood cell)
Artifact (aplasia, myelofibrosis, hyperglycemia, cold agglutinins)
Zidovidune treatment (AIDS)
You may need further testing by your PCP to tell exactly what the reason is or they may know already. This is all the information that I have on this. Hope it helps a little. Keep us posted. FLFLOWERGIRL