Hematocrit. The hematocrit (Ht or HCT, British English spelling haematocrit), also known as packed cell volume (PCV) or erythrocyte volume fraction (EVF), is the volume percentage (%) of red blood cells in blood. It is normally 45% for men and 40% for women.ecause the purpose of red blood cells is to transfer oxygen from the lungs to body tissues, a blood sample's hematocritâthe red blood cell volume percentageâcan become a point of reference of its capability of delivering oxygen.
The classic symptoms of a bacterial infection are localized redness, heat, swelling and pain. One of the hallmarks of a bacterial infection is local pain, pain that is in a specific part of the body. For example, if a cut occurs and is infected with bacteria, pain occurs at the site of the infection.
The signs and symptoms of bacterial foodborne illness include digestive system complaints and usually start within a few hours after you eat contaminated food. But it may take as long as a few days for the symptoms to start, which can make it difficult pinpoint which food made you sick.