Gastrointestinal infections—from acute viral gastroenteritis to Helicobacter pylori, Clostridioides difficile, invasive enteric bacteria (e.g., Salmonella, Shigella, Campylobacter, EHEC), and protozoa (Giardia, Cryptosporidium, Entamoeba)—require rapid, reliable diagnostics to guide therapy and infection control. At Southern Medical Supplies Limited (SMSL), we supply a complete menu spanning multiplex NAAT/RT-PCR stool panels, targeted PCR, C. difficile algorithms (GDH + toxin A/B with reflex NAAT), H. pylori stool antigen and urea breath test support, antigen/lateral-flow and ELISA assays for common pathogens, classic culture and antimicrobial susceptibility workflows, and O&P microscopy with concentration stains and Cary-Blair transport systems—plus stool lactoferrin/calprotectin when inflammatory diarrhea differentiation is needed. Our portfolio is sourced from an expanded network of trusted partners—EUROIMMUN, Ansh Labs, Randox, Streck, Bio-Rad, Abbott, Roche, Siemens Healthineers, Qiagen, bioMérieux, Cepheid, Werfen, Globe Scientific, ELGA LabWater, LW Scientific, Sebia, LTA SRL, Acrobiotech, MAKOL Innovacion Medica, Rayto Life and Analytical Sciences, Diazyme, Hardy’s Diagnostics, and Teco Diagnostics—delivering the sensitivity, specificity, and reproducibility clinicians need for fast pathogen detection, antimicrobial stewardship, and improved patient outcomes.