Yes, the detail must be got right, unintended consequences must be spotted and guarded against, the difference between 'solid organs' and other forms of donation must be considered, but a simple, clear framework must be maintained.
In this next step in the investigation, scientists will examine Khan's brain, the liver and even solidorgans to try and detect the presence of cyanide so they have more than one test showing it's what killed him -- and a better sense of how it was introduced into his body.