Prior to assessment the subject must do the following to achieve maximum accuracy in results: 1  4 hours fasting prior. 2  No exercise within 12 hours. 3  No alcohol within 48 hours. 4  Each subject must void completely before assessment. 5  Abstain from diuretic agents including caffeine, unless medically prescribed.
The definition of Accident in the law of the United States, as defined by the lexicographer Arthur Leff in his legal dictionary is: 1. A state of affairs or incident brought about by accidental means.
If the injury is caused by something owned or controlled by the supposedly negligent party, but how the accident actually occurred is not known (like a ton of bricks falls from a construction job), negligence can be found based on the doctrine of res ipsa loquitor (Latin for the thing speaks for itself).