实验室检查值与电解质练习卷（附答案）

Using American Diabetes Association (ADA) criteria, which HbA1c range is classed as prediabetes?

1. A5.7–6.4% (39–47 mmol/mol)
2. B4.0–5.6% (20–38 mmol/mol)
3. C8.0–9.0% (64–75 mmol/mol)
4. D6.5–7.5% (48–58 mmol/mol)

What is the usual BUN-to-creatinine ratio in a healthy adult (using mg/dL)?

1. AAbout 1:1 to 2:1
2. BAbout 100:1 to 200:1
3. CAbout 50:1 to 60:1
4. DAbout 10:1 to 20:1

Why is "free T₄" often measured rather than total T₄?

1. AThe free form is the unbound, active hormone
2. BThe free form is the only form made by the gland
3. CThe free form is stored inside the pituitary
4. DThe free form is the form excreted in urine

How does the nurse start a 24-hour urine collection at 08:00?

1. ACollect only the first urine passed on waking, and repeat this the next morning
2. BHave the patient void and discard that urine, then save all urine until 08:00 the next day
3. CSave the 08:00 urine as the first sample, then collect until 08:00 the next day
4. DSave three samples spread across the day and discard all of the urine passed at night

实验室打电话到病房报告钾的危急值 6.9 mEq/L。护士应怎么做？

1. A复述该数值，评估患者并通知医疗人员
2. B记录该数值并交给下一班
3. C等书面报告送到后再采取任何行动
4. D在告诉任何人之前，先请实验室重复检测

How should a blood sample for serum ammonia be handled?

1. APlaced on ice and sent to the laboratory at once
2. BKept warm and sent with the next routine batch
3. CShaken firmly to mix it before it is sent away
4. DLeft at room temperature for several hours first

A patient on a stable dose of levothyroxine now has a TSH of 9.8 mIU/L. She recently started taking her calcium and iron supplements with her morning levothyroxine. What is the most likely explanation?

1. AThe supplements are causing an overactive thyroid gland
2. BThe supplements are reducing levothyroxine absorption
3. CThe TSH is low, showing that the dose is now too high
4. DThe result is normal for a person on levothyroxine therapy

哪一组结果最能代表缺铁性贫血？

1. A血红蛋白正常，仅血小板计数高
2. B血红蛋白高和血细胞比容高
3. C血红蛋白低、红细胞大（MCV 高）和铁蛋白高
4. D血红蛋白低、红细胞小（MCV 低）和铁蛋白低