Source:http://linkedlifedata.com/resource/umls/id/C0014772
MSH: The number of RED BLOOD CELLS per unit volume in a sample of venous BLOOD.,CSP: number of red blood cells per unit volume in a sample of venous blood.,NCI: The determination of the number of erythrocytes in a blood sample.,NCI: A measurement of the total erythrocytes in a biological specimen.