Dr P.V. Mohanan was a Fellow of National Academy of Science, India and Royal Society of Biologists, UK. He was a JSPS Post doctoral Fellow at the University of Tsukuba, Japan in the field of Neurotoxicity. As a toxicologist, he was associated with all the medical devices/technologies developed at SCTIMST (Government of India). He headed both the Division of Toxicology and Dept. of Applied Biology. Dr Mohanan was a member in the Empowered committee on the 'Rapid Response Regulatory Framework for COVID-19 to deal with applications for development of vaccines, diagnostics, prophylactics and therapeutics and an expert member in the statutory Committee, RCGM, DBT, New Delhi. Dr Mohanan also served as an expert member at the DST, SERB, DBT, ICMR, CSIR and FSSAI Scientific committees. He was an Expert member of the Joint Food and Agriculture Organization of the United Nations and the World Health Organization (JECFA), USA. He was a member in the Scientific Advisory Committee of ICMR-NARFBR, Hyderabad and a Visiting Professor and Visiting Researcher at Toyo University, Japan and also a Certified Biological Safety Specialist. Dr Mohanan was an Adjunct Professor at the Indian Institute of Technology, Hyderabad and Jamia Hamdard University, New Delhi, India. He received a lifetime achievement award from the Society of Toxicology India for outstanding contribution in the field of toxicology. He patented an ELISA kit for the measurement of pyrogenicity. Dr Mohanan made significant contributions to the development of medical device regulations in India. He received a certificate of appreciation from the Ministry of Science and Technology, Government of India for his contribution to India getting full adherent status on GLP from OECD. He authored more than 300 publications, edited 10 books, 5 patent filed and 5 design registrations. He was the Secretary General of Society of Toxicology, India and Vice President, Kerala Academy of Sciences, India.