Chapter 33

Which vitamin is a powerful antioxidant, protects the erythrocyte membrane from oxidative stress, and is found primarily in vegetable oils? a. \(\operatorname{Vitamin} \mathrm{E}\) b. Vitamin \(\mathrm{K}\) c. \(\operatorname{Vitamin} \mathrm{C}\) d. Folic acid

A 70 -year-old man presented to his physician with a broken arm. Laboratory work indicated an elevated prothrombin time, with all other laboratory results being normal. The man was also taking an antibiotic for an earlier respiratory infection. Which, if any, of the following vitamins might be involved? a. Vitamin \(\mathrm{K}\) b. Vitamin \(\mathrm{D}\) c. Biotin d. None of these

The most commonly used method for determination of vitamin \(\mathrm{B}_{12}\) is a. Competitive protein-binding RIA b. Chemiluminescence assay c. Magnetic separation immunoassay d. \(\mathrm{HPLC}\)

Metabolic syndrome is a complex disorder with many parameters to measure. Which of the following is NOT needed to assess metabolic syndrome? a. Elevated HDL cholesterol b. Elevated triglyceride levels c. Elevated fasting glucose d. Elevated blood pressure

Which of the following nutritional markers has been found to be the most sensitive and helpful indicator of nutritional status in very ill patients? a. Transthyretin b. Transferrin c. Albumin d. Somatomedin C

Laboratory monitoring of the patient on TPN therapy is important to avoid possible complications. Which of the following trace elements should be monitored on a weekly basis? a. Copper b. Selenium c. Molybdenum d. Chromium