COVID-19 diagnostic testing - Mayo Clinic
2024年7月18日 · This is especially true if you don't have symptoms. If you take an antigen test and are negative for COVID-19, take another antigen test after 48 hours to check the results. Tests for more than one virus. An RT-PCR test called the Flu SC2 Multiplex Assay can show any of three viruses at the same time: the COVID-19 virus, influenza A and ...
How do COVID-19 antibody tests differ from diagnostic tests?
2024年5月14日 · Molecular tests. These tests look for genetic material from the COVID-19 virus. Polymerase chain reaction tests, shortened to PCR tests, are molecular tests. You may also hear this type of test called an NAAT test, short for nucleic acid amplification test. PCR tests are more accurate than the other type of COVID-19 test, called an antigen test.
Helicobacter pylori (H. pylori) infection - Mayo Clinic
2022年5月5日 · Several tests and procedures are used to determine whether you have Helicobacter pylori (H. pylori) infection. Testing is important for detection of Helicobacter pylori (H. pylori). Repeat testing after treatment is important to be sure H. pylori is gone. Tests may be done using a stool sample, through a breath test and by an upper endoscopy exam.
PSA test - Mayo Clinic
2023年4月27日 · The PSA test is a blood test used primarily to screen for prostate cancer. The test measures the amount of prostate-specific antigen (PSA) in your blood. PSA is a protein produced by both cancerous and noncancerous tissue in the prostate, a small gland that sits below the bladder in males. PSA is mostly found in semen, which also is produced in ...
ENA test - Mayo Clinic
2023年6月23日 · Overview. The extractable nuclear antigen test, known as an ENA test, is a blood test that checks for proteins in your blood, also known as antibodies. The ENA test is used to help diagnose certain autoimmune diseases. ENA stands for extractable nuclear antigen because these proteins can be taken out (extracted) from the cells in the body.
Cancer blood tests: Lab tests used in cancer diagnosis
2022年3月10日 · An electrophoresis blood test looks at the various proteins in your blood to find the ones made by your body's germ-fighting immune system. This test is helpful in diagnosing multiple myeloma. Tests to find chemicals made by cancer cells. Tumor marker tests use a sample of blood to look for chemicals made by cancer cells.
Prostate cancer screening: Should you get a PSA test?
2022年11月3日 · Cancer screening tests — including the prostate-specific antigen (PSA) test to look for signs of prostate cancer — can be a good idea. Prostate cancer screening can help identify cancer early on, when treatment is most effective. But it isn't perfect. Some men may find that the downsides of prostate cancer screening outweigh the potential ...
CA 125 test - Mayo Clinic
2022年3月31日 · A CA 125 test measures the amount of the protein CA 125 (cancer antigen 125) in the blood. This test may be used to monitor certain cancers during and after treatment. In some situations, the test may be used to look for early signs of ovarian cancer in people with a very high risk of the disease. A CA 125 test isn't accurate enough to use for ...
Trichomoniasis - Diagnosis & treatment - Mayo Clinic
2022年5月17日 · If the test doesn't show the parasite, but your provider thinks you may have trichomoniasis, other tests may be done. Your provider may order tests done on a sample of vaginal fluid, a penis uretheral swab or sometimes urine. Tests include a rapid antigen test and nucleic acid amplification test.
Von Willebrand disease - Diagnosis & treatment - Mayo Clinic
2021年10月26日 · Von Willebrand factor antigen. This determines the level of von Willebrand factor in your blood by measuring a particular protein. Von Willebrand factor activity. There are a variety of tests to measure how well the von Willebrand factor works in your clotting process. Factor VIII clotting activity.