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
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
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
Diagnosing Tuberculosis | Tuberculosis (TB) | CDC Understanding TB blood test or TB skin test results A positive test result for TB infection means you have TB germs in your body Your health care provider will do other tests to determine if you have inactive TB or active TB disease These tests may include a chest x-ray, and a test of the sputum (phlegm) you cough up
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
Diagnosis of Parasitic Diseases | Parasites | CDC This test is done by your health care provider taking a blood sample and sending it to a lab Blood smear This test is used to look for parasites that are found in the blood By looking at a blood smear under a microscope, parasitic diseases such as filariasis, malaria, or babesiosis, can be diagnosed
Laboratory Testing for Epstein-Barr Virus (EBV) Monospot test The Monospot test is not recommended for general use The antibodies detected by Monospot can be caused by conditions other than infectious mononucleosis Moreover, studies have shown that the Monospot produces both false positive and false negative results
Diabetes Testing | Diabetes | CDC - Centers for Disease Control and . . . Glucose screening test This measures your blood sugar at the time you're tested You'll drink a liquid that contains glucose Then, 1 hour later your blood will be drawn to check your blood sugar level A normal result is 140 mg dL or lower If your level is higher than 140 mg dL, you'll need to take a glucose tolerance test Glucose tolerance
Genetic Testing | Genomics and Your Health | CDC Whole genome sequencing is the largest genetic test and looks at all of a person's DNA, not just the genes Your healthcare provider might recommend exome sequencing or whole genome sequencing if you or your child has a complex medical condition, or if other testing has not found a genetic cause for a disease or condition