Detection of hidden blood in feces qualitative manual method
Detection of hidden blood in feces is a laboratory analysis aimed at detecting microscopic impurities of blood that are not visible to the naked eye. This test helps diagnose bleeding in the upper and lower parts of the gastrointestinal tract, which can indicate GI diseases, including ulcers, polyps, inflammatory processes and even cancer pathologies.
What does the test detect?
- Presence of erythrocytes and hemoglobin in feces.
- Internal bleeding even in the absence of obvious symptoms.
- Possible inflammatory and ulcerative lesions of the GI tract.
When do you need to take this analysis?
- If there is a suspicion of gastric or duodenal ulcer.
- Gastritis, colitis, enteritis with possible bleeding.
- Inflammatory bowel disease (Crohn's disease, ulcerative colitis).
- The presence of anemia of unclear origin.
- Suspicion of oncologic diseases of the gastrointestinal tract.
- Scheduled examination of people over 50.
Method of analysis
In the manual method of test, a qualitative sample is used, in which the reagent interacts with the hemoglobin of the blood, causing a change in color. This allows you to detect even a minimal amount of blood in the sample.
How to prepare for the test?
- For 3 days exclude meat products, liver, spinach, beets, horseradish, iron-containing drugs (they can affect the result).
- Refuse aspirin and NSAIDs (if possible) as they can cause microbleeding.
- Collect feces in a sterile container, avoiding urine or water.
- Bring the sample to the laboratory on the day of sampling.
Advantages of the manual method
- High sensitivity to small concentrations of blood.
- No false positives due to the control of a specialist.
- Quick and accurate result.
Biomaterial is feces.
Terms of readiness of the results are 1-2 working days