what is hemoglobin and hematocrit
â¢ Hemoglobin is a protein but hematocrit is not a protein; it is a measurement. â¢ Hemoglobin is a part of hematocrit because hematocrit is a measure of total red blood cells where hemoglobin is only a component.â¢ Hemoglobin count and hematocrit changes parallelly. (If one is low, the other too is low and vice versa.). Hemoglobin is a protein but hematocrit is not a protein; it is a measurement. â¢ Hemoglobin is a part of hematocrit because hematocrit is a measure of total red blood cells where hemoglobin is only a component.