D. Trew, Obstructing Regulatory Inspections, 2016, http://www.askaboutgmp.com/obstructing-regulatory-inspections and http://www.askaboutgmp.com/obstructing-regulatory-inspections-part-2
D. Trew, Laboratory Audits, On-Line Electronic Learning Course, 2016, http://learnaboutgmp.com/elearning/laboratory-audits/
D. Trew, Top 10 Tips When Preparing for a Laboratory Audit, 2015, http://www.askaboutgmp.com/top-10-tips-when-preparing-for-a-laboratory-audit
D. Trew, Organisation, Roles and Infrastructure for Regulated Laboratories, On-Line Electronic Learning Course, 2015, http://learnaboutgmp.com/elearning/organisation-roles-and-infrastructure-for-regulated-laboratories/
D. Trew, How Laboratory Testing should be Performed in a Quality Regulated Environment, 2015, http://www.askaboutgmp.com/how-laboratory-testing-should-be-performed-in-a-quality-regulated-environment
D. Trew, Performing Analysis in a Regulated or Accredited Laboratory,On-Line Electronic Learning Course, 2015, http://www.learnaboutgmp.com/e-learning/performing-analysis-in-a-regulated-or-accredited-laboratory
D. Trew, The Purpose of a Laboratory Quality Assurance Program (QAP), 2015,http://www.askaboutvalidation.com/the-purpose-of-a-laboratory-quality-assurance-program-qap
D. Trew, An Introduction to Current Good Laboratory Practice (cGLP), On-Line Electronic Learning Course, 2015,http://www.learnaboutgmp.com/e-learning/an-introduction-to-current-good-laboratory-practice-(cglp)
D. Trew, Controlling Chromatographic Integration in a Regulated or Accredited Laboratory, 2015 http://www.askaboutgmp.com/controlling-chromatographic-integration-in-a-regulated-or-accredited-laboratory
D. Trew, Requirements to Assure the Integrity of Laboratory Records & Data,2014,http://www.askaboutgmp.com/requirements-to-assure-the-integrity-of-laboratory-records-data
D. Trew, An Easy to Understand Guide to Current Good Laboratory Practice (cGLP), Premier Validation, Nenagh, 2014http://www.learnaboutgmp.com/book/an-easy-to-understand-guide-to-current-good-laboratory-practices-(cglp)-29
D. Trew, Laboratory Data Integrity, On-Line Electronic Learning Course, 2014,http://www.learnaboutgmp.com/e-learning/laboratory-data-integrity
D. Trew, The Application of Failure Mode Effects and Analysis (FEMA) to the Qualification of Laboratory Instrumentation, 2014 http://www.askaboutgmp.com/the-application-of-fmea-to-laboratory-instrument-qualification-risk-management and http://www.askaboutgmp.com/the-application-of-fmea-to-laboratory-instrument-qualification-risk-management-2, 31 May 2014
D. Trew, An easy to Understand Guide to HPLC Validation, Premier Validation, Nenagh, 2013, http://www.learnaboutgmp.com/book/an-easy-to-understand-guide-to-hplc-validation-8
I. Leader, P. Jupp, P. Weatherhead, V. Huynh, D. Trew, M. Handley, R. Donkor, D. Wheatley, The use of LC-MS in a forced degradation study of a novel molecule leading to the understanding of longer term drug product behaviour. Poster Presentation at 25 LC/MS Montreux Symposium 12-14 Nov 2008
K. J. Box, R. E. Donkor, I. P. Leader, P. A. Jupp, D. F. Trew, C. H. Turner,J. Pharm. Biomed. Anal., 2008, 47, 301-311
P. Jupp, D. Trew and C. Turner, NMR – An alternative method to measure pKa, Poster Presentation at FDA Science Forum, Washington D.C. 18-20 April 2006
P. Jupp, P. Weatherhead, V. Huynh, D. Trew, C. Turner, T. Day, D. Wheatley, Separation, characterization and quantification of an unexpected degradant formed from tocopherol succinate polyethylene glycol using HPLC, LC-MS and NMR, Poster Presentation at FDA Science Forum, Washington D.C. 18-20 April 2006
B. C. Challis, W. G. Guthrie, D.V. Roper, D. F. Trew, Chemical Compositionsfor Inhibiting Nitrosation Reactions in Toiletries and Cosmetics, United States Patent 5807542, 1998
B. C. Challis, D. F. Trew, W. G. Guthrie, D.V. Roper, Int. J. Cosmet. Sci., 1995, 17,119-131.
B. C. Challis, W. G. Guthrie, D.V. Roper, D. F. Trew, Proceedings of the 18th International Congress of the International Federation of Societies of Cosmetic Chemists, Venice, 3-6 Oct 1994, volume 2, Pages 360-371.
D. F. Trew, Analytical Methods for Non-Volatile N-Nitroso Compounds, PhD thesis, The Open University, 1992.