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  • Overview of Testing for SARS-CoV-2 | COVID-19 | CDC
    Positive viral test results indicate current infection and the person with COVID-19 should take steps to prevent spreading COVID-19 to others Negative viral test results mean the test did not detect the virus, but this doesn't rule out that the person could have an infection These results represent a snapshot of the time around specimen
  • Testing for COVID-19 | COVID-19 | CDC - Centers for Disease Control and . . .
    A single NAAT test can be used to confirm an antigen test result *Self-tests, or at-home tests, are antigen tests that can be taken anywhere without having to go to a specific testing site Read self-test package inserts thoroughly and follow the instructions closely when performing the test When you get tested
  • Clinical Testing and Diagnosis for Tuberculosis
    It is the only kind of TB skin test solution that is FDA-approved for this test method After 48–72 hours, the skin test reaction must be examined by a trained health care worker The health care worker measures any swelling where the tuberculin was injected to determine if the reaction to the test is positive or negative
  • Screening for Cervical Cancer | Cervical Cancer | CDC
    The HPV test and the Pap test can help prevent cervical cancer or find it early The HPV test looks for the virus (human papillomavirus) that can cause cell changes on the cervix The Pap test (or Pap smear) looks for precancers, cell changes on the cervix that might become cervical cancer if they are not treated appropriately
  • Screening for Prostate Cancer | Prostate Cancer | CDC
    Prostate specific antigen (PSA) test A blood test called a prostate specific antigen (PSA) test measures the level of PSA in the blood PSA is a substance made by the prostate The levels of PSA in the blood can be higher in men who have prostate cancer The PSA level may also be elevated in other conditions that affect the prostate
  • Clinical Testing Guidance for Tuberculosis: Tuberculin Skin Test
    If the TB skin test is used for baseline testing of U S health care personnel, use two-step testing Two-step testing If the first TB skin test result is negative, a second TB skin test should be done 1 to 3 weeks later If the second TB skin test result is positive, it is probably a boosted reaction
  • Clinical Guidance for Group A Streptococcal Pharyngitis
    A rapid antigen detection test (RADT) Throat culture RADTs have high specificity for group A strep bacteria but varying sensitivities when compared to throat culture Throat culture is the gold standard diagnostic test Positive RADT or culture Healthcare providers can use a positive RADT or throat culture as confirmation of group A strep
  • Getting Tested for HIV | HIV | CDC - Centers for Disease Control and . . .
    A self-test can be used at home or in a private location With an HIV self-test, you can get your test results within 20 minutes You should always interpret HIV self-test results according to the manufacturer's instructions If the HIV self-test is invalid, then the test did not work


















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