Dose-Response, LD50 and LC50, Ototoxins and CMR Hazards
CSP written lesson, 11 min read. CSP Domain 6: Occupational Health and Applied Science
Written with AI help from the rules it covers, then fact-checked against them. Study aid, not site-specific safety advice. The official rule controls.
What you'll learn
- Define dose, response, LD50, LC50, NOAEL, LOAEL and point of departure
- Compare the acute potency of two substances from their LD50 or LC50 values
- Convert an oral animal dose to a systemic-dose-equivalent air concentration and state its limits
- Recognize ototoxic chemicals and plan hearing protection where noise and ototoxicants combine
- Distinguish carcinogens, germ cell mutagens and reproductive toxicants and their hazard categories
What this lesson covers
This lesson covers how toxicologists describe dose and response: LD50 and LC50, NOAEL and LOAEL, the point of departure, and why a lower LD50 means a more potent substance. It then covers ototoxic chemicals and the carcinogen, mutagen and reproductive toxicant classes, and how to turn that information into an exposure control plan.
This lesson is included with a pass
Written lessons come with every CSP pass, along with the video lessons, the question bank, mocks and the tutor. $80 per exam for 6 months, or $143 for all three for 12 months.
Try the free hazard classification and toxicology (GHS) practice questions