Performance evaluation of the Biosynex AMPLIQUICK Fecal Bacteriology PCR kit

Area of Science:

• Clinical Microbiology
• Molecular Diagnostics
• Infectious Diseases

Background:

• Community-acquired diarrhea is frequently caused by enteropathogenic bacteria.
• Accurate and rapid diagnostic tools are crucial for effective patient management.

Purpose of the Study:

• To assess the clinical performance of the Biosynex AMPLIQUICK Fecal Bacteriology kit.
• To evaluate its utility in detecting key bacterial pathogens in acute gastroenteritis.

Main Methods:

• Analysis of 401 stool samples (194 retrospective, 207 prospective).
• Comparison of Biosynex AMPLIQUICK Fecal Bacteriology kit results with reanalysis using Seegene panels or targeted PCR assays for discordant samples.
• Performance evaluation using a composite reference standard (CRS).

Main Results:

• The Biosynex AMPLIQUICK Fecal Bacteriology kit demonstrated high clinical performance, with positive, negative, and overall agreement rates ranging from 98.24% to 100% for most tested pathogens.
• Only minor discrepancies were observed (three samples with four discordant results).
• Performance for certain pathogens (e.g., Vibrio spp., ETEC, EHEC O157) could not be determined due to low or absent positive cases.

Conclusions:

• The Biosynex AMPLIQUICK Fecal Bacteriology kit is a reliable tool for comprehensive bacterial pathogen screening in gastrointestinal infections.
• Its excellent clinical performance supports its use in routine practice for rapid and accurate diagnosis of bacterial gastroenteritis.