Something that became clear to Robert over time was that drug concentrations change significantly after death in most other parts of the body. ‘Interpreting the results is not at all straightforward,’ he admits. The scientific consensus used to be that ‘living blood’ gives the same toxicological results as post-mortem blood. ‘Nowadays we know that’s not true. You have to look at it with a great deal of caution. It’s very, very difficult.’
