No idea. But the fact that haloperidol can be present in the brain in much greater concentrations than in the circulatory system (or liver where it's metabolised) shows, to me, that people who were familiar with Sheila and her illness witnessed the adverse effects it was having on her hand/eye co-ordination and gait.
Where's the evidence Haloperidol can be present in the brain in much greater concentrations than tests reveal in the blood and liver?
What would be the point in testing the blood and liver if it is at odds with the brain?
What evidence exists from professionals that SC had problems with her coordination?
Her GP said she complained of tiredness and sleepiness.
As such the dose was halved.
I note she was also prescribed Tridulan for hay fever which can bring on the side effects SC complained of.
I recall taking Tridulan for prickly heat on an 18 - 30's holiday to Tenerife during the 80's and kept falling asleep in night clubs before midnight