What is the term for a controlled biological test to determine if a substance can cause cancer?

What is the term for a controlled biological test to determine if a substance can cause cancer?

• A. In vivo test
• B. Bioassay
• C. Genotoxicity assay
• D. Pharmacokinetic study

Answer: (B)

A bioassay is a controlled biological test used to determine whether a substance can cause cancer by observing its effects in a living system. In practice, a cancer-related bioassay often involves exposing animals to the substance under defined conditions and monitoring for tumor development, providing a direct measure of carcinogenic potential. This distinguishes it from an in vivo test, which is any test performed in a living organism and can cover many different endpoints; a genotoxicity assay, while addressing DNA damage as a possible cancer mechanism, does not by itself assess overall cancer-causing potential in a living organism; and a pharmacokinetic study focuses on how the substance is absorbed, distributed, metabolized, and excreted, not on cancer risk.

A bioassay is a controlled biological test used to determine whether a substance can cause cancer by observing its effects in a living system. In practice, a cancer-related bioassay often involves exposing animals to the substance under defined conditions and monitoring for tumor development, providing a direct measure of carcinogenic potential. This distinguishes it from an in vivo test, which is any test performed in a living organism and can cover many different endpoints; a genotoxicity assay, while addressing DNA damage as a possible cancer mechanism, does not by itself assess overall cancer-causing potential in a living organism; and a pharmacokinetic study focuses on how the substance is absorbed, distributed, metabolized, and excreted, not on cancer risk.