When should blood samples for trough drug levels be collected? A. 30 minutes after peak levels B. 45 minutes before the next dose C. 1 to 2 hours after the last dose D. Immediately before the next dose is given

Cocaine is metabolized to:

The vitamin that is an antioxidant that acts as a scavenger for lipid Peroxyl-free radicals and that has a role in RBC protection from hemolysis is  

The urinary metabolite measured as an indicator of norepinephrine synthesis is: a. dopamine. b. homovanillic acid (HVA). c. serotonin. d. vanillylmandelic acid (VMA).

As part of homeostatic control by hormones, the metabolism of electrolytes and water balance is controlled in part by the renal system. What hormone synthesized by the kidneys affects water and electrolyte balance?

Which one of the following statements concerning steroid hormones is correct?

Epinephrine is also called: a. noradrenaline. b. adrenaline. c. metanephrine. d. serotonin.

Which set of results is consistent with uncompensated respiratory alkalosis?

A patient with glomerulonephritis is most likely to present with the following serum results:

Which one of the following trace elements, when combined with an enzyme, is essential for stabilization of extracellular matrixes such as collagen and elastin?