The determination of the amount of hemoglobin in reticulocytes within a sample. [ NCI ]. The trait is Reticulocyte Corpuscular Hemoglobin Content (EFO_0009229). Also known as: CHr, RETICH, Ret. Corpuscular Hemoglobin Content, Reticulocyte Cellular Hemoglobin Content, Total Reticulocyte Corpuscular Hemoglobin Content Measurement.