abnormal hemoglobin abnormal mean corpuscular hemoglobin MP:0000225 MP:0001589 MP:0002595 MPheno.ontology Mean corpuscular hemoglobin (MCH) is a standard measurment in clinical chemistry, usually reported in picograms/cell. abnormal MCH anomalies in the average levels of hemoglobin contained in an erythrocyte mean corpuscular hemoglobin