&gt;<i>Edison machines would sometimes produce “radically different results” for the same patients, the former employee alleged. Referring to a thyroid test known as thyroid-stimulating hormone, the employee wrote that “a patient would swing between” hypothyroidism and hyperthyroidism, or too little of the hormone and too much, when the test was repeated the same day.</i><p>This sounds really bad. When you have this huge amount of uncertainty in results, it calls into question their whole finger prick blood sampling methodology. I&#x27;m starting to think that it&#x27;s impossible to get an accurate blood work from a finger prick only.