Jeff Ojwach is a Research Associate at King’s College London within the Drug Control Centre, where he focuses on developing advanced analytical approaches for anti-doping and forensic toxicology. His research centres on the development and validation of dried blood spot (DBS)-based analytical methods using GC-MS/MS, providing a minimally invasive alternative to traditional venous blood sampling. DBS sampling enables finger-prick collection, improved analyte stability at room temperature, and simplified transport without cold-chain requirements, making it an increasingly valuable matrix for modern anti-doping testing. In addition, his research includes methodological innovations for high-specificity morphine analysis using GC-MS/MS, aimed at improving the sensitivity, selectivity, and reliability of opioid detection in complex biological matrices.

His work addresses important analytical challenges associated with DBS testing, including limited sample volume, hematocrit effects, and matrix interferences, ensuring robust and reproducible detection of prohibited substances.

Jeff completed his PhD in Biomolecular Sciences at the University of East Anglia, where his research investigated microbial sulfur cycling, dimethylsulfoniopropionate (DMSP) metabolism, methane production in marine environments, and the broader role of microbial processes in global biogeochemical cycles.