The determination of the mean amount of hemoglobin per reticulocyte present in a sample. [ NCI ]. The trait is Reticulocyte Mean Corpuscular Hemoglobin Measurement (EFO_0009202, an Experimental Factor Ontology id). Also known as: CHr, High light scatter reticulocyte percentage, Measurement of reticulocyte haemoglobin, reticulocyte haemoglobin measurement, reticulocyte hemoglobin content (CHr).