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  2. Gastrointestinal bleeding - Wikipedia

    en.wikipedia.org/wiki/Gastrointestinal_bleeding

    The presence of bright red blood in stool, known as hematochezia, typically indicates lower gastrointestinal bleeding. Digested blood from the upper gastrointestinal tract may appear black rather than red, resulting in "coffee ground" vomit or melena. [2] Other signs and symptoms include feeling tired, dizziness, and pale skin color. [18]

  3. List of reagent testing color charts - Wikipedia

    en.wikipedia.org/wiki/List_of_reagent_testing...

    It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2]

  4. H&E stain - Wikipedia

    en.wikipedia.org/wiki/H&E_stain

    The H&E staining procedure is the principal stain in histology [3] [7] [2] [5] in part because it can be done quickly, [7] is not expensive, and stains tissues in such a way that a considerable amount of microscopic anatomy [9] [10] is revealed, [7] [5] [4] and can be used to diagnose a wide range of histopathologic conditions. [8]

  5. Blood in stool - Wikipedia

    en.wikipedia.org/wiki/Blood_in_stool

    Blood in stool looks different depending on how early it enters the digestive tract—and thus how much digestive action it has been exposed to—and how much there is. The term can refer either to melena, with a black appearance, typically originating from upper gastrointestinal bleeding; or to hematochezia, with a red color, typically originating from lower gastrointestinal bleeding. [6]

  6. Hereditary haemochromatosis - Wikipedia

    en.wikipedia.org/wiki/Hereditary_haemochromatosis

    Haemochromatosis is protean in its manifestations, i.e., often presenting with signs or symptoms suggestive of other diagnoses that affect specific organ systems.Many of the signs and symptoms below are uncommon, and most patients with the hereditary form of haemochromatosis do not show any overt signs of disease nor do they have premature morbidity, if they are diagnosed early, but, more ...

  7. Hematochezia - Wikipedia

    en.wikipedia.org/wiki/Hematochezia

    A complete blood count as well as an hemoglobin test should be performed when a patient presents symptoms of hematochezia. A colonoscopy may be necessary if there is suspicion of bleed from colon particularly in the elderly to look for the site and many causes of bleed like carcinoma, ulcerative colitis, rectal varices or other lesions and in certain instances upper gastrointestinal endoscopy ...

  8. Template:Table of blood sampling tubes - Wikipedia

    en.wikipedia.org/wiki/Template:Table_of_blood...

    Tube cap color or type in order of draw Additive Usage and comments Blood culture bottle: Sodium polyanethol sulfonate (anticoagulant) and growth media for microorganisms: Usually drawn first for minimal risk of contamination. [1] Two bottles are typically collected in one blood draw; one for aerobic organisms and one for anaerobic organisms ...

  9. Lower gastrointestinal bleeding - Wikipedia

    en.wikipedia.org/wiki/Lower_gastrointestinal...

    A lower gastrointestinal bleed is defined as bleeding originating distal to the ileocecal valve, which includes the colon, rectum, and anus. [2] LGIB was previously defined as any bleed that occurs distal to the ligament of Treitz, which included the aforementioned parts of the intestine and also included the last 1/4 of the duodenum and the entire area of the jejunum and ileum. [1]