I'm not an endocrinologist (or even used to US units) but I'm also thinking that a reading of 15mg/dL does seem too low to remain asymptomatic. I think it would be difficult to sustain verticality. I'm guessing there's a lab error. Sometimes for example, if the blood tube isn't spun down immediately, the white blood cells consume the glucose resulting in a low number.
11/23/08 at 9:20pm