Lab values & electrolytes worksheet with answers

Free printable Lab values & electrolytes worksheet: 8 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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1.Easy

Why is AST less specific for liver damage than ALT?

  1. AAST is also found in heart and skeletal muscle
  2. BAST is made by the bone marrow, not the liver
  3. CAST is not measured in the blood at all
  4. DAST is found only in the kidney tubules
2.Easy

Which finding is typical of a high serum magnesium?

  1. AReduced or absent deep tendon reflexes
  2. BCarpal spasm when a cuff is inflated
  3. CA strong urge to drink water
  4. DOveractive reflexes and muscle twitching
3.Easy

Uric acid in the blood is a breakdown product of:

  1. APurines
  2. BGlucose
  3. CFats
  4. DHemoglobin
4.Medium

A woman who is 30 weeks pregnant has a new blood pressure of 152/98 mm Hg. Which urine finding would most support preeclampsia?

  1. AProtein in the urine
  2. BGlucose in the urine
  3. CKetones in the urine
  4. DNitrites in the urine
5.Medium

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

When should a blood sample for a digoxin level be drawn to be interpreted correctly?

  1. AOnly after a meal, because food is needed for absorption
  2. BAt least 6–8 hours after a dose, often just before the next one
  3. CAt any time, because digoxin levels do not change during the day
  4. DWithin 30 minutes after an oral dose to show the peak level
7.Hard

A patient receiving chemotherapy has a white cell count of 1.8 × 10³/µL with 20% neutrophils and 5% bands. What is the absolute neutrophil count (ANC)?

  1. A4,500/µL
  2. B450/µL
  3. C1,800/µL
  4. D360/µL
8.Hard

A patient has painless jaundice, itching, dark urine and pale stools. ALP is markedly raised, conjugated (direct) bilirubin is high and ALT is only mildly raised. What is the most likely cause?

  1. AGilbert syndrome, a harmless inherited bilirubin disorder
  2. BIncreased breakdown of red blood cells (hemolytic anemia)
  3. CBlockage of bile flow, for example by a tumor in the bile duct
  4. DAcute viral hepatitis with widespread liver cell damage

Answer key

  1. 1. A · AST is also found in heart and skeletal muscle
  2. 2. A · Reduced or absent deep tendon reflexes
  3. 3. A · Purines
  4. 4. A · Protein in the urine
  5. 5. C · A rise in the reticulocyte count
  6. 6. B · At least 6–8 hours after a dose, often just before the next one
  7. 7. B · 450/µL
  8. 8. C · Blockage of bile flow, for example by a tumor in the bile duct

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