abnormal cellular hemoglobin content decreased cellular hemoglobin content decreased CH reduced corpuscular haemoglobin content MP:0008956 reduced corpuscular hemoglobin content reduced CH decreased corpuscular haemoglobin content MPheno.ontology decreased cellular haemoglobin content decreased corpuscular hemoglobin content CH is reported in picograms (pg). decrease in the mean of the red blood cell hemoglobin concentration (RBC CH) histogram, which represents the distribution of red blood cells by the amount of hemoglobin present in each individual cell independent of cell volume