What is the primary purpose of toxicology screening tests?

The primary purpose of toxicology screening tests is to identify the presence of harmful substances. These tests are designed to detect and analyze various chemicals, toxins, or drugs that can pose a risk to human health or the environment. By identifying these harmful substances, medical professionals and researchers can make informed decisions regarding treatment, safety protocols, and further investigations.

The other options, while they may touch upon related themes, do not align with the core function of toxicology screening. Enhancing food production safety, for instance, is an important goal but falls outside the direct scope of toxicology testing, which focuses specifically on identifying toxic agents rather than addressing agricultural practices. Similarly, promoting the use of medicinal substances does not directly relate to toxicology screening, which is more concerned with uncovering potentially dangerous substances rather than supporting beneficial ones. The notion of eliminating chemical testing contradicts the very essence of toxicology, which relies on such testing to uncover hazards.