实验室检查值与电解质练习卷（附答案）

成年女性的哪个血红蛋白值低于典型参考范围？

1. A13.5 g/dL（135 g/L）
2. B9.2 g/dL（92 g/L）
3. C12.8 g/dL（128 g/L）
4. D14.6 g/dL（146 g/L）

Which gland produces thyroid-stimulating hormone (TSH)?

1. AThe adrenal cortex
2. BThe thyroid gland itself
3. CThe anterior pituitary gland
4. DThe parathyroid glands

万古霉素谷浓度应在何时采血？

1. A输注开始后两小时
2. B输注结束后立即
3. C下一次给药前，通常在给药前 30 分钟内
4. D一天中任何方便的时间，不论何时给药

A patient's levothyroxine dose was changed today. When is the TSH usually rechecked?

1. AAfter about 1 year
2. BAfter about 24 hours
3. CAfter about 6–8 weeks
4. DAfter about 3 days

Why is a baseline platelet count taken before starting heparin therapy?

1. ABecause heparin is given at a dose based on the platelet count
2. BSo that the INR can be calculated from the platelet count later
3. CSo a later fall from heparin-induced thrombocytopenia is detected
4. DBecause heparin increases the platelet count to dangerous levels

A patient takes high-dose biotin supplements for hair and nails. Why should the nurse report this before blood tests?

1. ABiotin causes a true rise in blood glucose in all patients
2. BBiotin can distort some immunoassays, such as troponin or TSH
3. CBiotin lowers the hemoglobin by destroying the red cells
4. DBiotin makes the blood clot in the tube before testing

A patient on clozapine reports a sore throat and fever. The ANC is 400/µL (0.4 × 10⁹/L). What should the nurse do?

1. AGive the next dose and recheck the ANC next month
2. BGive the dose with food to protect the stomach
3. CHold the clozapine and report the result at once
4. DHalve the dose and give it with a throat lozenge

A 5-year-old has new bruising and petechiae two weeks after a viral illness. Platelets are 12 × 10³/µL; hemoglobin, white cell count and clotting times are normal. Which condition is most likely?

1. AHemophilia A
2. BAcute leukemia
3. CDisseminated intravascular coagulation
4. DImmune thrombocytopenia (ITP)