title: A confirmatory study of the up-and-down method for acute oral toxicity testing.
abstract: Ten materials have been tested in parallel both by the "classical" method for acute oral toxicity (LD50) and by the up-and-down method. Materials tested included laundry and dishwashing detergents, a shampoo, a flavor, potassium hydroxide, and caffeine. All testing was done in Sprague-Dawley rats. Excellent agreement was seen between the two methods. The classical method typically used 40 to 50 animals while the up-and-down method required only six to nine animals per material.
mesh_terms: D000284:Administration, Oral; D000818:Animals; D005260:Female; D007928:Lethal Dose 50; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D012737:Sex Factors; D014116:Toxicology / Q000379:methods*