The global early toxicity testing industry has evolved significantly over the past few decades, fueled by increasing regulatory pressure, the growing need for safer pharmaceuticals, and advancements in technology. Early toxicity testing plays a critical role in the early stages of drug development by evaluating the safety of new compounds before they progress to clinical trials. With the rise of personalized medicine-tailoring medical treatment to individual characteristics such as genetics, environment, and lifestyle-there is a growing push to integrate early toxicity testing with personalized approaches.