Which term is the probability a substance will cause harm under specific conditions of use?

Which term is the probability a substance will cause harm under specific conditions of use?

• A. Dose
• B. Hazard
• C. Risk
• D. Toxicology

Answer: (C)

Risk is the probability that exposure to a substance will cause harm under defined conditions of use. It combines how dangerous the substance is (hazard) with how much, how long, and by what route you’re exposed (dose and exposure context). When a substance has a hazard, it doesn’t always translate into harm unless people are exposed in a way that could cause an effect; risk measures that likelihood under specific circumstances. In contrast, hazard is the inherent potential to cause harm, dose is the amount encountered, and toxicology is the field that studies adverse effects. So, the term that best fits “the probability a substance will cause harm under specific conditions of use” is risk.

Risk is the probability that exposure to a substance will cause harm under defined conditions of use. It combines how dangerous the substance is (hazard) with how much, how long, and by what route you’re exposed (dose and exposure context). When a substance has a hazard, it doesn’t always translate into harm unless people are exposed in a way that could cause an effect; risk measures that likelihood under specific circumstances. In contrast, hazard is the inherent potential to cause harm, dose is the amount encountered, and toxicology is the field that studies adverse effects. So, the term that best fits “the probability a substance will cause harm under specific conditions of use” is risk.