OECD Test Guideline 414: What is a Prenatal Developmental Toxicity Study?
Developmental toxicity studies are conducted to understand the effects on the mother and fetus of chemical substances to which they are exposed, especially during pregnancy. The OECD Test Guideline 414 (Prenatal Developmental Toxicity Study) prepared in this context is an internationally recognized standard method.
Purpose of the study
The OECD Test 414 is used to evaluate a substance used during pregnancy:
- possible toxic effects on the mother's organism
- structural abnormalities (malformations), growth retardation or developmental disorders in the embryo or fetus.
This study plays an important role in both health risk assessment and environmental risk assessment.
How is the OECD Test Guideline 414 test performed?
This comprehensive study is usually conducted on mammalian species such as rats or rabbits. The basic steps of the test are as follows:
- The test substance is administered during pregnancy in an appropriate dosage range.
- The mothers are observed for clinical symptoms, weight changes and behavioural problems.
- In the last phase of pregnancy, the young animals and the placenta are removed and subjected to a detailed examination.
- The fetuses are examined for malformations and developmental disorders of the skeleton, internal organs and external structures.
Why is a prenatal developmental toxicity test performed?
This test is particularly necessary or recommended for determining the safety profile of products developed in the following areas:
- Drug development
- Assessment of plant protection products and biocidal products
- Chemical Safety Testing
- Toxicological analyses of cosmetics
Due to the sensitivity of development in the womb, early detection of damage that may occur at this stage plays an important role in protecting human health.
Reliable test procedures with Nanolab
At Nanolab, we conduct OECD 414 prenatal developmental toxicity testing in accordance with international standards and use scientific methods to determine the potential risks of your products to human health. With our expert team and our modern laboratory infrastructure, we ensure that you receive reliable results.
Contact us for all your questions.


