Since June 2009, trial registration in the CTRI has been made mandatory by the Drugs Controller General (India). From April 2018 the register only accepted trials prospectively.
The search options are fielded searches via fields such as type of trial, study design, trial phase and keywords.
Research into the content of the registry has been conducted:
Adhikari T, Rao MV, Srikanth N, Juneja A, Sharma S, Maulik M et al. Overview of Ayurveda trials registered with Clinical Trial Registry-India: Need for customized data set items. Ayu 2020; 41(3):143.
Bhalla IS, Ravindranath AG, Vaswani R, Saberwal G. Data from the Indian drug regulator and from Clinical Trials Registry-India does not always match. Front Med (Lausanne). 2024;11:1346208.
Bhide S, Patil S, Sohal A et al. Investigator knowledge, awareness, and registrations of academic clinical trials with the Clinical Trial Registry of India: An observational study. Perspect Clin Res. Oct-Dec;14:187-193.
Birajdar AR, Bose D, Nishandar TB, Shende AA, Thatte UM, Gogtay NJ. An audit of studies registered retrospectively with the Clinical Trials Registry of India: A one year analysis. Perspectives in Clinical Research 2019; 10(1):26–30.
Dutta S, Singhal S, Shah R. A Systematic Analysis of COVID-19 Clinical Trials Registered in the Clinical Trials Registry of India. Cureus. 2024;16:e57939.
Gao P, Chen J, Hong Z et al. Landscape of cancer clinical trials in India - a comprehensive analysis of the Clinical Trial Registry-India. Lancet Reg Health Southeast Asia. 2024;24:100323.
Karekar SR, Pooja SG, Marathe PA. A review of clinical studies involving pregnant women registered in the Clinical Trials Registry of India. Perspect Clin Res. 2020;11:8-12.
Maulik M, Gupta J, Juneja A, Adhikari T, Sharma S, Panchal Y et al. Letter on: "An analysis of deficiencies in the data of interventional drug trials registered with Clinical Trials Registry - India". Trials 2020; 21(1):38. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6947893/pdf/13063_2019_Article_4010.pdf.
Meher BR, Rout BK, Ponnusamy S, Mohanty RR, Padhy BM. The landscape of Phase IV Clinical Trials in India - A comprehensive analysis of the Clinical Trial Registry-India. Perspect Clin Res. 2025;16:138-142.
Mendiratta J, Pillamarapu M, Saberwal G. In Clinical Trials Registry-India, the classification of sponsors needs to be standardised. Indian J Med Ethics. 2024;IX:11-18.
Munshi R, Pilliwar C, Maurya MR. Public disclosure of clinical trial results at Clinical Trial Registry of India- Need for transparency in research! Perspect Clin Res 2023; 14(2):81–5
Pillamarapu M, Mohan A, Saberwal G. An analysis of deficiencies in the data of interventional drug trials registered with Clinical Trials Registry - India. Trials 2019; 20:535.
Rao MVV, Maulik M, Juneja A, Adhikari T, Sharma S, Gupta J et al. Clinical Trials Registry - India: A decadal perspective. Indian J Pharmacol 2020; 52(4):272–82. https://www.ijp-online.com/article.asp?issn=0253-7613;year=2020;volume=52;issue=4;spage=272;epage=282;aulast=Rao.
Ravindranath AG, Benny A, Bhalla IS, Vaswani R, Saberwal G. Clinical trial registration in India: 12% of drug regulatory trials are not registered, as required by law. Health Res Policy Syst. 2025;23:19.
Sabu ST, Venkatraman S, Cherian JJ et al. A review of clinical trials registered in India from 2008 to 2022 to describe the first-in-human trials. Perspect Clin Res. 2024;15:18-23.
Shetty NS, Salvi RA, Thatte UM, Gogtay NJ. Has mandatory prospective registration of all studies brought about a change? A 1-year audit of studies registered in the Clinical Trials Registry of India [CTRI] before and after April 1, 2018. Perspect Clin Res 2021; 12(2):72–5.
Yadav P, Jaykaran, Chaudhari M, Saxena D, Kantharia ND. Clinical trials registered in clinical trial registry of India: A survey. J Pharmacol Pharmacother. 2011;2:289-292.
Default operator In the Keywords field - Phrase searches.
Boolean operators No
Phrase searching breast cancer
Nesting No
Truncation No
Field tags Searches can include a range of categories and field options.
Hyphens Hyphens are recognised, so search with hyphens and without
Help pages No
Example breast cancer
Saved searches No
Export tagged Records can be saved as PDFs
Updated 6 October 2025