Feb 3, 2025 · The test is a pass/fail test that determines whether you can detect a test agent, such as through taste, smell, or an involuntary cough. The OSHA-accepted fit test protocols provide complete instructions for conducting qualitative fit tests with the accepted test agents. NIOSH does not endorse or recommend the use of the irritant smoke fit test.

Aug 29, 2024 · This overview describes current information on the types of tests used to detect SARS-CoV-2 infection and their intended uses. This information is intended for use by healthcare providers, public health professionals, and those organizing and implementing testing in non-healthcare settings.

Mar 10, 2025 · Getting a COVID-19 test Buy self-tests (at-home tests) Buy self-tests (at-home tests) online or in pharmacies and retail stores. If you have health insurance, it may reimburse the cost of purchasing self-tests. Visit FDA's website for a list of authorized tests. Go to a testing location Visit a community-based testing location, such as a pharmacy or health center near …

Apr 15, 2024 · The enzyme-linked immunosorbent assay is the most common serologic test for measuring antibody to CMV. Congenital CMV infection cannot be diagnosed with antibody testing (IgG and IgM). The standard laboratory test for diagnosing congenital CMV infection is a PCR on saliva, with a confirmatory test on urine.

May 15, 2024 · Laboratory diagnosis of Lyme disease relies on serologic testing for antibodies to Borrelia burgdorferi. CDC recommends a two-step serologic testing process using FDA-cleared assays. Serologic assays may be falsely negative during the first 4-6 weeks after infection. Before CDC will recommend new tests, they must be cleared by the Food and Drug Administration …

Instructions for blood collection Blood for serologic testing of measles at CDC is collected as described in the Infectious Disease Laboratories Test Directory entry for each test, listed below: Measles serology instrucitons (Test CDC-10244) Measles avidity instructions (Test CDC-10248) Testing infants or small children Blood for serologic testing of infants or small children can be …

May 15, 2024 · Laboratory testing CDC recommends the use of FDA-cleared antibody tests for laboratory diagnosis of Lyme disease. As with antibody tests for other infectious diseases, the accuracy of these tests depends upon how long you've been infected. Antibody tests may appear falsely negative during the first few weeks of infection, typically when a patient has an …

Apr 17, 2025 · For more details on interpreting TB skin test results, please visit Clinical Testing Guidance for Tuberculosis: Tuberculin Skin Test. TB skin results should only be read by a trained health care professional. Consult with your state and local public health authorities to determine who is authorized to place and read TB skin tests in your state.

Mar 21, 2025 · CDC recommends testing blood for lead exposure. A patient’s blood lead level (BLL) is measured in micrograms of lead per deciliter of blood (μg/dL). Healthcare providers should follow recommendations based on initial screening capillary and confirmed venous BLLs. Learn more about the recommended actions after a blood lead level test.

Apr 2, 2024 · 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 their testing regimen for pertussis.