The mean corpuscular hemoglobin concentration, a measure of the concentration of hemoglobin in a given volume of packed red blood cells. It is reported as part of a standard complete blood count.he mean corpuscular hemoglobin concentration, a measure of the concentration of hemoglobin in a given volume of packed red blood cells. It is reported as part of a standard complete blood count.
An enema is the administration of a substance in liquid form into the rectum. This may be performed to aid bowel evacuation or to administer medicines.
What is a barium enema? An enema uses a small tube to gently inject a special liquid (barium) into your rectum. Usually, an enema is filled with a special fluid to help you move your bowels when you're constipated or in preparation for surgical procedures.