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Testing for COVID-19 | COVID-19 | CDC - Centers for Disease …
2024年8月24日 · 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 - CDC
2024年12月10日 · 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.
Testing for Tuberculosis | Tuberculosis (TB) | CDC
2024年6月17日 · 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.
Take the Test - Prediabetes | Diabetes | CDC
2022年9月22日 · Centers for Disease Control and Prevention. CDC twenty four seven. Saving Lives, Protecting People
Cancer Screening Tests | Cancer | CDC - Centers for Disease …
2025年1月16日 · 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.
Overview of Influenza Testing Methods | Influenza (Flu) | CDC
2024年8月8日 · The post-test probability or predictive values (positive and negative predictive values) of an influenza virus test depend upon the prevalence of circulating seasonal influenza viruses in the patient population, and the specific test characteristics (sensitivity and specificity) compared to a "gold standard" comparison test (molecular assay or ...
Screening for Cervical Cancer | Cervical Cancer | CDC
2024年12月11日 · 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.
Laboratory Testing for Pertussis | Whooping Cough | CDC
CDC serologic test CDC and the Food and Drug Administration developed a serologic assay that has been useful for confirming diagnosis, especially during suspected pertussis outbreaks. A few state public health laboratories have included this assay as part of …
Diagnosis for Flu | Influenza (Flu) | CDC - Centers for Disease …
2022年10月3日 · The test will also help public health laboratories save time and testing materials, and possibly to return test results faster. The Food and Drug Administration (FDA) has given CDC an Emergency Use Authorization for this new test. Initial test kits were sent to public health laboratories in early August 2020.
Laboratory Testing for Norovirus | Norovirus | CDC
2024年4月24日 · These assays can be used for preliminary identification of norovirus when testing multiple specimens during outbreaks. However, samples that test negative should be confirmed by a second technique, such as RT-qPCR. Thus, EIA kits should not replace RT-qPCR during outbreak investigations. Genotyping