Hepatitis C
As few as 5–50% of infected people in the United States and Canada (or 5 to 50 out of every 100) know that they have Hepatitis C. Doctors suggest that people who are at high risk for the disease, including people with tattoos, should get tested. Screening is also suggested for people with elevated (high) liver enzymes, since this is often the only sign that a person has chronic hepatitis. Routine screening (testing everyone) is not recommended in the United States.