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Don't Fall for the FOBT Fib-An Observational Study
A Tanousian1, P Watanakunakorn1, N Obad1
1Sierra View Medical Center-Internal Medicine Residency USA.
Summary
Fecal occult blood testing (FOBT) has limited value for diagnosing acute gastrointestinal bleeding in hospitalized patients. Positive FOBT results should not guide clinical decisions for inpatient GI bleeding evaluations.
Area of Science:
- Gastroenterology
- Clinical Diagnostics
Background:
- Fecal occult blood testing (FOBT) is frequently used in emergency settings for acute gastrointestinal (GI) bleeding.
- However, FOBT is FDA-approved only for colorectal cancer screening in outpatients.
- Its application in acute GI bleeding may lead to misinformed decisions and increased healthcare use.
Purpose of the Study:
- To assess the diagnostic utility of FOBT in patients admitted with suspected acute GI bleeding.
- To evaluate if FOBT results influence clinical decision-making and healthcare utilization in this setting.
Main Methods:
- Retrospective observational study of patients admitted with suspected GI bleeding between 2022-2024.
- Review of electronic medical records for patients with positive FOBT results.
- Data collection included physical exam, hemoglobin, transfusion needs, and endoscopic findings.
Main Results:
- 70 patients met inclusion criteria; only 11 (15.7%) required endoscopic intervention for acute bleeding.
- Positive physical exam findings were slightly more common in patients needing endoscopy (approx. 10% difference).
Conclusions:
- FOBT demonstrates limited diagnostic value for acute GI bleeding in hospitalized patients.
- Current guidelines do not support using FOBT for this indication.
- Positive FOBT results should not dictate inpatient admission or diagnostic strategies for suspected GI bleeding.
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