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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

    Both square test areas in the upper area of the card show the intense blue color of a positive result. The lower two smaller circular areas on the orange stripe are analytical control reactions, positive on the left and negative on the right, that help assure that the card and developer bottle have been maintained in proper conditions and have not been damaged before the test is performed.

  4. Upper gastrointestinal bleeding - Wikipedia

    en.wikipedia.org/wiki/Upper_gastrointestinal...

    Holman used simulated gastric specimens and found the Hemoccult test to have significant problems with non-specificity and false-positive results, whereas the Gastroccult test was very accurate. [12] Holman found that by 120 seconds after the developer was applied, the Hemoccult test was positive on all control samples.

  5. Stool test - Wikipedia

    en.wikipedia.org/wiki/Stool_test

    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.

  6. Fecal immunochemical test - Wikipedia

    en.wikipedia.org/wiki/Fecal_immunochemical_test

    The fecal immunochemical test (FIT) is a diagnostic technique that examines stool samples for traces of non-visible blood, which could potentially indicate conditions including bowel cancer. [1] Symptoms which could be caused by bowel cancer and suggest a FIT include a change in bowel habit, anaemia , unexplained weight loss, and abdominal pain .

  7. Human feces - Wikipedia

    en.wikipedia.org/wiki/Human_feces

    The stool guaiac test (or guaiac fecal occult blood test) is conducted to detect the presence of blood in stool that is not apparent to the unaided eye. The main pathogens that are commonly looked for in feces include: Bacteroides species; Salmonella and Shigella; Yersinia tends to be incubated at 30 °C (86 °F), which is cooler than usual

  8. Melena - Wikipedia

    en.wikipedia.org/wiki/Melena

    Melena is a form of blood in stool which refers to the dark black, tarry feces that are commonly associated with upper gastrointestinal bleeding. [1] The black color and characteristic strong odor are caused by hemoglobin in the blood being altered by digestive enzymes and intestinal bacteria.

  9. Alkali denaturation test - Wikipedia

    en.wikipedia.org/wiki/Alkali_denaturation_test

    The alkali denaturation test, also known as A or Apt test, is a medical test used to differentiate fetal or neonatal blood from maternal blood found in a newborn's stool or vomit, or from maternal vaginal blood.

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