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  2. Fecal occult blood - Wikipedia

    en.wikipedia.org/wiki/Fecal_occult_blood

    Fecal occult blood testing (FOBT), as its name implies, aims to detect subtle blood loss in the gastrointestinal tract, anywhere from the mouth to the colon.Positive tests ("positive stool") may result from either upper gastrointestinal bleeding or lower gastrointestinal bleeding and warrant further investigation for peptic ulcers or a malignancy (such as colorectal cancer or gastric cancer).

  3. Stool guaiac test - Wikipedia

    en.wikipedia.org/wiki/Stool_guaiac_test

    The stool guaiac test or guaiac fecal occult blood test (gFOBT) is one of several methods that detects the presence of fecal occult blood [1] (blood invisible in the feces). [2] The test involves placing a fecal sample on guaiac paper (containing a phenolic compound, alpha-guaiaconic acid, extracted from the wood resin of Guaiacum trees) and ...

  4. Stool test - Wikipedia

    en.wikipedia.org/wiki/Stool_test

    Yellow and blue tops for parasite testing, red top for stool cultures and the white top was provided by the patient with the sample. A stool test is a medical diagnostic technique that involves the collection and analysis of fecal matter. Microbial analysis (culturing), microscopy and chemical tests are among the tests performed on stool samples.

  5. Rectal examination - Wikipedia

    en.wikipedia.org/wiki/Rectal_examination

    Veterinary medicine. In veterinary medicine rectal examination is useful in dogs for analysis of the prostate (as in men), pelvic urethra, sublumbar lymph nodes, and anal glands. In horses it is a vital component of the clinical examination for colic, to determine the presence or absence of bowel torsion, impaction, or displacement.

  6. How common are false-positive COVID tests? Experts weigh in.

    www.aol.com/lifestyle/common-false-positive...

    The most common include the Abbott BinaxNOW Self Test, the Quidel QuickVue At-Home OTC COVID-19 Test and the Ellume COVID-19 Home Test. Accuracy varies among each test, but Ellume says that its ...

  7. Colorectal cancer - Wikipedia

    en.wikipedia.org/wiki/Colorectal_cancer

    Colorectal cancer (CRC), also known as bowel cancer, colon cancer, or rectal cancer, is the development of cancer from the colon or rectum (parts of the large intestine). [5] Signs and symptoms may include blood in the stool, a change in bowel movements, weight loss, abdominal pain and fatigue. [9] Most colorectal cancers are due to lifestyle ...

  8. False positives and false negatives - Wikipedia

    en.wikipedia.org/wiki/False_positives_and_false...

    The false positive rate (FPR) is the proportion of all negatives that still yield positive test outcomes, i.e., the conditional probability of a positive test result given an event that was not present. [6] The false positive rate depends on the significance level. The specificity of the test is equal to 1 minus the false positive rate.

  9. Rectovaginal examination - Wikipedia

    en.wikipedia.org/wiki/Rectovaginal_examination

    A rectovaginal examination is a type of gynecological examination used to supplement a pelvic examination. In the rectovaginal examination, a doctor or other health care provider places one finger in the vagina and another in the rectum to assess the rectovaginal septum. The examiner will look for any scarring or masses that may indicate cancer ...