Every adult aged 18 and older should be tested for hepatitis C at least once, per the CDC recommendation issued in August 2020, and all pregnant people should be tested during each pregnancy — regardless of reported risk. The case for universality rests on scale and silence: CDC estimates about 2.4 million adults in the United States live with hepatitis C, and agency materials state that close to half of them do not know they are infected, because the disease can run for decades without symptoms while it scars the liver.
This site publishes information, not medical advice. The recommendations and estimates here belong to the CDC, the US Preventive Services Task Force, and the named studies, and they describe population screening policy, not any individual's diagnosis. A person with a positive antibody result, liver disease, or current risk factors such as injection drug use should plan testing and treatment with their own clinician.
Why screen everyone rather than people at risk?
Risk-based screening missed people, in CDC's assessment. Transmission shifted after 2010 toward younger adults, with new infections concentrated among people who inject drugs, driven by the opioid epidemic — a population that risk questionnaires often failed to flag in primary care. CDC's 2020 recommendation replaced the 2012 birth-cohort testing policy, which had targeted everyone born 1945 to 1965, with a single lifetime test for all adults, on the logic that identifying silent infections now pays off because treatment has become short, oral, and highly curative. The US Preventive Services Task Force issued a matching B recommendation in 2020, covering adults 18 to 79.
The recommendation at a glance
| Group | CDC recommendation, 2020 |
|---|---|
| All adults 18 and older | At least one lifetime hepatitis C test |
| Pregnant people | Testing during every pregnancy |
| People with ongoing risk — injection drug use, dialysis | Periodic retesting, per CDC guidance |
| Anyone after a known exposure | Testing regardless of other criteria |
How does the testing sequence work?
Screening is a two-step laboratory sequence, per CDC. A first test detects hepatitis C antibodies, which show exposure at any point in the past; a positive antibody result does not establish current infection, because roughly a quarter of infected people clear the virus spontaneously. A confirmatory RNA test, ideally performed on the same blood draw, determines whether virus is present now. CDC explicitly calls for same-visit or same-draw confirmation because a fraction of antibody-positive people never receive the second test — a follow-up gap the agency identifies as a measurable break in the cascade of care.
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What happens after a diagnosis?
Hepatitis C became a treatable condition with a short clock in the direct-acting antiviral era. Treatment regimens of 8 to 12 weeks of oral medication achieve sustained virologic cure — no detectable virus months after finishing therapy — in more than 95 percent of treated patients, per clinical trial data and CDC's treatment summaries. Cure halts liver damage progression and, per published studies, is associated with reduced liver cancer and mortality risk compared with untreated infection. What cure does not confer is immunity: a cured person can be reinfected, which is why CDC recommends periodic testing for people with ongoing risk.
Why does this matter for pregnancy specifically?
The 2020 recommendation added testing during every pregnancy because vertical transmission — infection passed from a pregnant person to the infant — has become a leading source of new childhood infection as the epidemic shifted younger, and because identifying infection changes care for both. CDC's guidance directs that infants born to people with hepatitis C receive appropriate testing, and treatment itself is not given during pregnancy because safety data were lacking when the recommendation was issued; a person diagnosed in pregnancy is generally treated after delivery, a sequencing decision made with their clinician.
What is the state of the epidemic, per the data?
CDC surveillance has documented rising acute hepatitis C reports through the 2010s and 2020s, with new infections concentrated among adults under 40 who inject drugs. Deaths attributed to hepatitis C have run above deaths from many better-known reportable diseases in CDC mortality analyses, largely because undiagnosed chronic infections from earlier decades continue to progress. Screening, in the agency's framing, is the intervention that converts this slow-burning reservoir into diagnosed, treatable infections — and the 2020 universal rule exists because the previous risk- and cohort-based rules left too many of them undetected.
When to talk to a clinician
A positive result at either testing step belongs in a clinical conversation, not in self-interpretation. CDC guidance directs that people with confirmed infection receive liver evaluation, vaccination against hepatitis A and B where indicated, and referral for treatment; people with ongoing risk — injection drug use, dialysis, HIV — should discuss a testing rhythm with their clinician. Symptoms such as fatigue, abdominal swelling, jaundice, or unexplained abnormal liver tests warrant prompt evaluation, and pregnant people should make sure their hepatitis C status is documented at prenatal visits, since the testing recommendation applies to every pregnancy.
The rule is deliberately simple — one test for every adult once in a lifetime, and one per pregnancy — because the disease it targets hides, and the cure now waiting on the other side of the lab result works more than 95 percent of the time.