1. Acute Toxicity Tests: These tests determine the adverse effects of a substance following a short-term exposure. They are typically used to assess immediate health risks and involve a single or short-term dose.
2. Sub-chronic Toxicity Tests: These tests evaluate the effects of repeated exposure over a period, usually up to 90 days. They help in understanding the potential for cumulative toxicity.
3. Chronic Toxicity Tests: These long-term studies, often lasting a year or more, assess the effects of prolonged exposure to a substance. They are crucial for identifying potential carcinogenic and other chronic health effects.
