Normal urine has a specific gravity of ________ to 1.030.

How is the reference rage of an assay determined?

A) By testing 100-150 known standards and determining the range that runs from the lowest value to the highest value B) By testing 100-150 specimens that represent the laboratory's patient population and determining the range that runs from 2 SD below the mean to 2 SD above the mean C) By testing 100-150 specimens that represent the laboratory's patient population and ordering the values from lowest to highest with the lowest and highest values representing the range D) None of the above

Which two barriers will prevent the US health care system from reaching an ideal state?

a. Anthro-cultural factors; technological change b. The American mindset in terms of expectations; inadequacies in the existing infrastructure c. Cost of health care; social and demographic forces d. Employment-based health insurance; insurance companies