North America remains the largest market for Antimicrobial Efficacy Testing, accounting for roughly 35% of global revenue. Robust regulatory frameworks such as the FDA’s antimicrobial stewardship guidelines, high adoption of advanced laboratory automation, and sustained private‑equity investment in biotech hubs drive continued market strength. Europe follows with 25% share, propelled by stringent EU directives on antimicrobial resistance, extensive public‑funded research programs, and a mature diagnostic infrastructure across Germany, France, and the UK. Asia Pacific, the fastest‑growing region, commands 30% of the market and is fuelled by rapid hospital network expansion, aggressive government initiatives to curb AMR in China and India, and rising demand for point‑of‑care testing in emerging economies. Latin America contributes 5%, where growing middle‑class populations, increasing hospital construction, and regional health‑policy reforms in Brazil and Mexico support market entry. The Middle East & Africa also represent 5%, with investments in healthcare infrastructure, adoption of WHO‑aligned AMR strategies, and a nascent but accelerating diagnostic ecosystem in Saudi Arabia and South Africa. Collectively, these dynamics underpin the Antimicrobial Efficacy Testing market growth and shape the regional forecast for the next five years.