MCH Hematology Blood Test Is High What Does It Mean?

I am not a doctor and I suggest that you go over these results with your doctor and ask for further bloodwork. A high result of MCH can indicate:
Infectious Disorders (Specific Agent)
Diphyllobothrium latum infestation

Neoplastic Disorders
Acute Myelogenous/Blastic Leukemia AML
Leukemia

Allergic, Collagen, Auto-Immune Disorders
Hemolytic disease of newborn

Deficiency Disorders
Folic acid deficiency anemia

Hereditary, Familial, Genetic Disorders
Spherocytosis, hereditary

Vegetative, Autonomic, Endocrine Disorders
Myasthenia gravis

Reference to Organ System
Megaloblastic anemia
Pernicious anemia

Drugs
Estrogen (Premarin/Estinyl) Administration/Toxicity