FOB/TF Rapid Test Panel (Feces) is a rapid detection tool based on immunochromatographic, used for qualitative detection of human hemoglobin (Hb) and transferrin (Tf) in feces,
to assist in the diagnosis of gastrointest bleeding and related diseases.
Detection Principle
This detection employs immunochromatography, with the core principle as follows:
Sandwich ELISA:The test area (T zone) is pre-coated with monoclonal antibodies against human hemoglobin or transferrin.
Hemoglobin/transerrin in the sample binds to the colloidal gold-labeled specific antibody, forming a complex.
The complex migrates to the test area, where it binds to the immobilized antibodies to form a visible red/pink band.
Control area (C zone):
Pre-coated with anti-mouse IgG antibody, used to sample migration and reagent validity.
If the C zone does not show color, the detection is invalid.
Technical Features
Fast and efficient:
Detection time of5-10 minutes, suitable for emergency or outpatient rapid screening.
Simple operation, no complex equipment required, and can be operated by non-professionals after training.High sensitivity and specificity:
Hemoglobin detection sensitivity can reach 0.03-0.2μg Hb/mL (or 0.mg Hb/g feces), specificity > 99%.
Transferrin detection can compensate for the degradation of hemoglobin in gastric, improving the detection rate of upper gastrointestinal bleeding.
Dual-index combined detection:
Hemoglobin is sensitive to lower gastrointestinal bleeding and transferrin is stable for upper gastrointestinal bleeding, combined detection can cover the entire gastrointestinal bleeding scenario.
Reduce the rate of missed diagnosis, suitable for the early screening of colorectal cancer, adenomatous polyps.
Strong anti-interference ability:
Not affected by diet, drugssuch as vitamin C, aspirin), no special dietary preparation required.
Simple sample processing, direct collection of feces after dilution can be detected.
Clinical Value Early screening of colorectal cancer: Colorectal cancer often presents with occult bleeding in the early stage, FOB/TF detection can detect微量oglobin/transferrin in feces, suggesting further colonoscopy examination. Studies have shown that regular screening in adults over 50 can reduce the of colorectal cancer by 20% and the mortality rate by 30%. Diagnosis of digestive system diseases: To assist in the diagnosis ulcerative colitis, Crohn's disease, gastric ulcer, duodenal ulcer, etc. Monitor the treatment effect of gastrointestinal, assess the risk of recurrence. Postoperative monitoring: For real-time monitoring of bleeding conditions in patients after gastrointestinal surgery, to guide clinical intervention.
Product Advantages
CE Certification and Compliance:
Compliant with the requirements of the EU Medical Devices Directive (MDD), CE, ensuring product quality and safety.
Long Shelf Life and Stability:
Store at room temperature (2-30℃) for 24 months, no referation needed, convenient for storage and transportation.
Multiple Specifications Available:
Provide both strip and cassette formats to meet different scenario needs.
Adjustable detection thresholde.g., 50ng/mL, 100ng/mL), adapting to clinical differentiated needs.
Operating Procedures
Sample Collection
Collect feces using a dedicated collection device to avoid contamination by urine, water, etc.
Sample Handling:
Insert the collection device into the diluent, mix and then let it stand.
Sample Addition and Testing:
Suck the diluted sample and add it to the sample addition hole of the detection card/strip.
Resultpretation: Observe the result within 5-10 minutes. Positive: Both T and C areas show color (hemoglobin/transferr positive). Negative: Only the C area shows color. Invalid: The C area does not show color.