They may want to check you for macrocytic anemia.
There can also be other reasons the MCV comes back elevated. I found this info on an nih gov website:
"In red cell agglutination, doublet erythrocytes are counted as one, and larger clumps are not counted as red blood cells at all. This leads to a "decrease" in red cell count and a falsely elevated MCV. Determination of the hemoglobin value is not affected. Prewarming the sample eliminates these spurious values.
In hyperglycemia, red cells are transiently hypertonic in relation to the isotonic diluting fluid, resulting in swollen cells and an elevated MCV. This can be avoided if some time is allowed for equilibration after dilution."
I found this on the web at drkaslow- a com site:
"Mean Corpuscular Volume (MCV)
The MCV relates to the average size of the red blood cell. MCV increase or decrease along with an increase or decrease in MCH is a significant finding for folic acid and/or B12 need (increase) or iron, copper or vitamin B6 need (decrease). MCV and MCH should always be viewed together.
Optimum values 87.0 to 92.0 cu. microns.
The MCV is increased in:
Megaloblastic Anemias (pernicious, folic acid deficiency, B12 deficiency)*
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"
Copyright 1994-2018MedHelp.All rights reserved. MedHelp is a division of Vitals Consumer Services, LLC.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.