Division 3.2.2.5.1 Two generation reproduction toxicity study
United Kingdom
Studies of reproductive function must be carried out and extend over at least two filial generations (F1, F2) in at least one species, usually a rodent, and may be combined with a teratogenicity study. The substance under investigation shall be administered orally to males and females at an appropriate time prior to mating. Administration shall continue until the weaning of the F2 generation.
All relevant fertility, gestation, parturition, maternal behaviour, suckling, growth and development of the F1 offspring from fertilisation to maturity and the development of the F2 offspring to weaning must be carefully observed and reported. Protocols for the reproduction toxicity study should be in line with OECD Guideline 416.
Notes on Division 3.2.2
Textual amendments
- F1
Words in Annex 2 point 3.2.2 substituted (31.12.2020) by The Animal Feed (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/654), regs. 1, 83(d)(ii); 2020 c. 1, Sch. 5 para. 1(1)
- F2
Word in Annex 2 s. 3 point 3.2.2 substituted (27.2.2025) by The Retained EU Law (Revocation and Reform) Act 2023 (Consequential Amendments) Regulations 2025 (S.I. 2025/82), reg. 1(2), Sch. 11 para. 11(d)(ii)