occult blood test

The blood test is also called occult blood test. It is a way of medical examination. This method is used to detect the presence or absence of a small amount of bleeding in the digestive tract. Before taking the test, you should refrain from taking iron, eating animal blood, liver or lean meat, rhubarb green leafy vegetables and other food for three days. All of the above factors will affect the inspection results and should be avoided before inspection. Basic Information Specialist classification: Digestive examination classification: feces / parasitic examination Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Normal value: no Above normal: negative: A negative result suggests that there may be no symptoms of gastrointestinal bleeding. Positive: Positive test results suggest gastrointestinal bleeding. Tips: Forbidden to take iron, eat animal blood, liver or lean meat, rhubarb green leafy vegetables and other food for three days. Normal value Normal no color change is a negative reaction. If blue is positive, depending on the color speed and depth, the positive results can be divided into four levels: Those who appear in dark blue green immediately (four "+" plus signs); The half-minute appears as (three "+" plus signs); The one-time appearer is (two "+" plus signs); 2 minutes appear as (a "+" plus sign); The color change for 5 minutes is ("-" minus sign). Clinical significance Abnormal result The ulcer disease was improved after treatment or turned negative in the stable phase occult blood test; the occult blood test was positive in the gastric cancer. People with gastrointestinal bleeding who need to be examined. Positive results may be diseases: gastric ulcer perforation, colorectal cancer, colon cancer, rectal cancer matters needing attention Taboo before the test: banned iron, edible animal blood, liver or lean meat, rhubarb green leafy vegetables and other food for three days. Requirements for inspection: Pay attention to the interference of other factors. Inspection process Method: Take a sterile cotton swab and add 1~2 drops of 1% benzidine glacial acetic acid and 3% hydrogen peroxide solution. Then pick a little stool with bamboo stick and apply it on the cotton swab to observe the color change. . Not suitable for the crowd Taking iron, eating animal blood, liver or lean meat, rhubarb green leafy vegetables and other foods should avoid this test, as it will affect the results of the test. Adverse reactions and risks This test is a non-invasive test with no complications.