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
Guidelines and Recommendations | HIV Partners | CDC The 2017 technical update provides information on the use of the Alere Determine HIV 1 2 Ag Ab Combo single use rapid test (Determine) in laboratories where it is not feasible to conduct an instrumented antigen antibody test as the initial test in the algorithm
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
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
This is a TEST | State and Local Readiness | CDC TEST is a collaborative game that bridges the gap between discussion and operational exercises It uses narrative-based problems to foster teamwork, discuss resource management, and aid in understanding specific roles and responsibilities during an emergency
Testing and Diagnosis for Lyme disease | Lyme Disease | CDC Because the immune system continues to make the antibodies for months or years after an infection is gone, your blood test will remain positive after the bacteria are no longer present Unfortunately, these antibodies don’t reliably prevent re-infection should you be bitten by another infected tick About tickborne co-infections
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
Waived Tests | Laboratory Quality | CDC Waived tests include test systems cleared by the FDA for home use and those approved for waiver under the CLIA criteria While CLIA requires waived tests to be simple and low-risk, they are not completely error-proof Errors can occur in testing if manufacturer's instructions are not followed or if personnel are unfamiliar with the test system