“…Clinicians often felt frustrated about this patient demand, knowing that it came from sources they did not regard as authoritative, such as mass media or patient social circles. However, it is far from unprecedented to see patient demand drive physician practice (Hahn, Morley, Morrow, & Epling, 2009). The decision is often made to order testing because of time "I did some screening, and then I got nasty notes from the lab saying that insurance wasn't going to pay for it."…”