Clinical Chem Test Bank (Final Exam)

20. In the thyroid gland, which of the following is described as the secretory unit? A Calcitonin B. Follicle C. Colloid D. The isthmus {Ans: B. Follicle}15. Which laboratory test listed would be useful to the clinician to assess patients with osteoporosis? A. Urinary magnesium B. Total serum calcium C. Serum NTX-I D. Serum PTH {Ans: C. Serum NTX-I}21. Which of the following compounds promote osteoclast formation? A. Bisphosphonate B. 1, 25-dihydroxy Vitamin D3 C. Calcitonin D. Osteoprotegerin {OPG} {Ans: B. 1, 25-dihydroxy Vitamin D3}1. Which hormone is not produced by the placenta? A. Estriol B. Human chorionic gonadotropin (hCG) C. Adrenocorticotropin hormone (ACTH) D. Progesterone {Ans: C. Adrenocorticotropin hormone (ACTH)}33. 3, 5, 3′-triodothyronine is characterized as which of the following? A. The least potent thyroid hormone B. The most potent thyroid hormone C. Secreted by the anterior pituitary gland in response to low blood levels of TSH D. Used to make both T3 and T4 hormones {Ans: B. The most potent thyroid hormone}26. The principle method used to measure hormone levels in blood in most clinical laboratories is: A. Gas chromatography. B. Thin layer chromatography. C. Electrophoresis. D. Immunoassays. {Ans: D. Immunoassays.}9. Which