LOEL stands for which term?

LOEL stands for which term?

• A. Lowest Observed Adverse Effect Level
• B. Lowest Observed Effect Level
• C. No Observed Effect Level
• D. Recommended Exposure Level

Answer: (B)

LOEL stands for the Lowest Observed Effect Level. This is the smallest exposure level at which a measurable effect is observed in a study. The effect can be any detectable change, not necessarily harmful. It sits in contrast to the lowest dose that causes an adverse effect (LOAEL), and to NOEL/NOAEL, which denote levels where no effects are observed. The term “Recommended Exposure Level” isn’t a standard toxicology term. So the correct interpretation is that LOEL is the Lowest Observed Effect Level.

LOEL stands for the Lowest Observed Effect Level. This is the smallest exposure level at which a measurable effect is observed in a study. The effect can be any detectable change, not necessarily harmful. It sits in contrast to the lowest dose that causes an adverse effect (LOAEL), and to NOEL/NOAEL, which denote levels where no effects are observed. The term “Recommended Exposure Level” isn’t a standard toxicology term. So the correct interpretation is that LOEL is the Lowest Observed Effect Level.