DOI: http://dx.doi.org/10.18203/2320-6012.ijrms20201936

Evaluation of serological test in the diagnosis of Helicobacter pylori and risk factors associated with the infection

Ayman Mohamed Alfadil Mohamed, Ream Elzain Abdelgadir, Abdel Rahim Mahmoud Muddathir

Abstract


Background: Serological testing has been widely used for the diagnosis of H. pylori. This study aimed to evaluate the serological test and to determine the sensitivity and specificity of the test in the diagnosis of H. pylori. The study also aimed to address if there are risk factors like blood grouping, Smoking, Age, gender, and residence of the patients associated with H. pylori infection.

Methods: A prospective cross‑sectional study was performed among 100 symptomatic patients attending Dr. Suliman dispensary, Elnehoud city in west Kordofan state-Sudan, from March to September 2016. H. pylori were detected on plasma by using Healgen immunochromatography test cards from Xiamen Boson Biotech Co., Ltd (China), and identified from a stool by using monoclonal antigen detection from the same trademarked company. Data for the risk factors associated with the infection were assessed in a participant interview.

Results: The serological test showed significant differences when compared to the stool antigen test p-value = 0.000. The statistical analysis showed moderate sensitivity and high specificity of the serological test compared to the stool antigen detection test. The study also showed that smoking [odds ratio (OR): 1.20, 95% confidence interval (CI): (1.24-4.02) and blood grouping (OR: 1.10, 95% CI: (1.08-1.60) were risk factors for H. pylori infection.

Conclusions: The serological test showed high specificity and moderate sensitivity in comparison to the stool antigen test. The increased risk of H. pylori infection associated with smoking and blood grouping.


Keywords


H. pylori, Risk factors, Serological test, Sensitivity, Specificity

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