Health-care professionals like surgeons, dentists, infusion nurses, and other medical workers who may suffer needlestick injuries and come into contact with blood are at increased risk of contracting hepatitis C virus. Any health-care professional who suffers a needlestick or other exposure to a patient's blood should be tested for hepatitis C and watch for symptoms of acute hepatitis C infection like fatigue, fever, clay-colored stool, abdominal pain, joint pain, jaundice, nausea, vomiting, dark urine, and loss of appetite. Approximately 75 to 85 percent of people who are infected with HCV go on to develop chronic hepatitis C infection. Several blood tests are available to detect HCV infection. Some of these tests check for antibodies (anti-HCV). Some blood tests check for the presence of HCV genetic material. Some blood tests check for the amount of virus in the body (viral load).