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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).
The article fecal occult blood (FOB) provides an expanded consideration of the clinical application of FOB tests generally, including other clinical methods, and the comments here are those that relate specifically to the guaiac gFOBT method. One major use of stool testing for blood is detection of colorectal cancer.
The following tests are combined to determine the causes of the source of bleeding. Digital rectal exam (DRE) and fecal occult blood test (FOBT) Colonoscopy; Anoscopy; Esophagogastroduodenoscopy ; Capsule endoscopy; CT Scan; Melena is defined as dark, tarry stools, often black in color due to partial digestion of the red blood cells. [6]
A multi-target stool DNA test was approved in August 2014 by the FDA as a screening test for non-symptomatic, average-risk adults 50 years or older. [8] A 2017 study found this testing to be less cost effective compared to colonoscopy or fecal occult blood testing. [9]
FOBT may refer to: Faecal occult blood test, used to detect colon cancer and other disease; Fixed odds betting terminal, an electromechanical gambling machine; Fear of buying the top, the fear of buying at the highest prices of a market
Fecal occult blood testing (FOBT) of the stool is typically recommended every two years and can be either guaiac-based or immunochemical. [20] If abnormal FOBT results are found, participants are typically referred for a follow-up colonoscopy examination.