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Serum amylase is less specific than lipase for pancreatitis because amylase also comes from:

1. AThe bone marrow
2. BThe heart muscle
3. CThe salivary glands
4. DThe thyroid gland

What does the red cell distribution width (RDW) describe?

1. AHow fast the red cells settle in a tube
2. BHow long red cells survive in the blood
3. CHow many red cells are young cells
4. DHow much the red cells vary in size

Where are urinary casts formed?

1. AIn the urinary bladder
2. BIn the urethra
3. CIn the kidney tubules
4. DIn the ureters

A patient with iron-deficiency anemia started oral iron. Which result is usually the earliest sign that treatment is working?

1. AA rise in the reticulocyte count
2. BA fall in the mean cell volume (MCV)
3. CA rise in the platelet count
4. DA fall in the white cell count

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

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

Which change in clotting tests is normal in late pregnancy?

1. AaPTT doubles from baseline
2. BINR rises to about 3.0
3. CFibrinogen and D-dimer rise
4. DPlatelets rise above 600 × 10³/µL

A patient's results: sodium 140 mEq/L, chloride 100 mEq/L, bicarbonate 12 mEq/L. What is the anion gap, and what does it suggest?

1. A52 mEq/L, a very high anion gap
2. B40 mEq/L, a high anion gap
3. C12 mEq/L, a normal anion gap
4. D28 mEq/L, a high anion gap

Four results arrive at the same time. Which patient should the nurse see first?

1. AINR 2.6 in a patient on warfarin for atrial fibrillation
2. BWhite cell count 12.0 × 10³/µL on the first day after surgery
3. CHemoglobin 10.4 g/dL (104 g/L) in a patient with stable chronic kidney disease
4. DGlucose 48 mg/dL (2.7 mmol/L) in a patient who had insulin an hour ago