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At what time of day is serum cortisol normally highest?

1. AEarly morning
2. BAround midnight
3. CLate afternoon
4. DAfter the evening meal

What does a positive direct antiglobulin test (direct Coombs test) show?

1. AThe patient's plasma is missing the clotting factor VIII
2. BThe patient's platelets are clumping together in the blood sample
3. CThe patient's red cells are too small and contain little hemoglobin
4. DAntibodies or complement are attached to the patient's red cells

A tuberculin skin test (TST) is read as positive. What does this mean?

1. AThe person is fully immune and can never develop TB
2. BThe person has never been exposed to TB bacteria
3. CThe person has been infected with TB bacteria at some point
4. DThe person definitely has active, contagious pulmonary TB

A patient has weight loss, tremor and heat intolerance. Which thyroid test pattern fits Graves disease?

1. ANormal TSH with a low free T₄
2. BLow TSH with a high free T₄
3. CHigh TSH with a low free T₄
4. DHigh TSH with a normal free T₄

A patient on peritoneal dialysis notices that the drained fluid is cloudy and has abdominal pain. What should the nurse do?

1. AStop dialysis for a week and recheck the fluid later
2. BRecord it as normal and continue the usual exchanges
3. CSend the fluid for cell count and culture and report it
4. DAdd more glucose to the next bag to clear the fluid

A patient without symptoms has a fasting plasma glucose of 132 mg/dL (7.3 mmol/L) on Monday and 138 mg/dL (7.7 mmol/L) on Thursday. What does this show?

1. AThe results are within the normal fasting range
2. BThe results show reactive hypoglycemia
3. CThe results show prediabetes only
4. DThe results meet the criteria for diabetes

After a crush injury, a patient's urine dipstick is strongly positive for blood, but microscopy shows almost no red cells. CK is very high. What best explains this?

1. ABleeding is coming from the bladder lining
2. BA kidney stone is scraping the ureter lining
3. CThe sample was contaminated with menstrual blood
4. DMyoglobin from damaged muscle is in the urine

Four drug levels are reported. Which patient should the nurse assess first?

1. APhenytoin 15 mcg/mL with no symptoms
2. BValproate 75 mcg/mL with no symptoms
3. CDigoxin 1.0 ng/mL with a pulse of 72/min
4. DLithium 1.8 mEq/L with a new coarse tremor