Microbial Limit Testing is a cornerstone of microbiological quality control for non-sterile pharmaceutical products. Conducted under USP <61>, USP <62>, USP <60>, EP 2.6.12, EP 2.6.13, and IP guidelines, MLT ensures products comply with microbial acceptance criteria. The testing includes Total Aerobic Microbial Count (TAMC), Total Yeast and Mold Count (TYMC), and the detection of pathogens such as Escherichia coli, Salmonella spp., Pseudomonas aeruginosa, Staphylococcus aureus, Burkholderia cepacia, Candida albicans, Clostridium sporogenes, and bile-tolerant Gram-negative bacteria. Compliance with these specifications protects patients from potential infections or product spoilage and provides manufacturers with regulatory assurance.