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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
- 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 Breast Cancer | Breast Cancer | CDC - Centers for Disease . . .
Other potential harms from breast cancer screening include pain during procedures and radiation exposure from the mammogram test itself While the amount of radiation in a mammogram is small, there may be risks with having repeated x-rays
- 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
- 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
- Diagnosing von Willebrand Disease - CDC
This test also measures the time it takes for blood to clot It measures primarily the clotting ability of factors I (1), II (2), V (5), VII (7), and X (10) If the level of any one of these factors is too low, it will take longer than normal for the blood to clot The results of this test will be normal among most people with VWD Fibrinogen test
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