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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Name: ____________________   Date: ____________

1.Easy

Which urine test is used to screen people with diabetes for early kidney damage?

  1. AA urine culture for bacteria
  2. BUrine specific gravity
  3. CA urine pregnancy test
  4. DThe urine albumin-to-creatinine ratio (ACR)
2.Easy

For a person who is not taking an anticoagulant, the INR is typically about:

  1. A5.0–6.0
  2. B2.0–3.0
  3. C3.5–4.5
  4. D0.8–1.2
3.Easy

Which hormone is measured in blood or urine to test for pregnancy?

  1. AAntidiuretic hormone (ADH)
  2. BHuman chorionic gonadotropin (hCG)
  3. CFollicle-stimulating hormone (FSH)
  4. DThyroid-stimulating hormone (TSH)
4.Medium

A patient had a total thyroidectomy yesterday. Which laboratory value is most important to monitor in the first days after surgery?

  1. ASerum glucose
  2. BSerum potassium
  3. CSerum sodium
  4. DSerum calcium
5.Medium

A breathless patient in the emergency department has a BNP below 100 pg/mL. What does this suggest?

  1. ASevere heart failure is certainly the cause of the problem
  2. BHeart failure is an unlikely cause of the breathlessness
  3. CThe kidneys are failing and the patient needs dialysis
  4. DThe patient has had a myocardial infarction in the past day
6.Medium

A patient on levothyroxine has palpitations, weight loss and a TSH of 0.05 mIU/L. What is the most likely explanation?

  1. AThe patient has stopped the drug
  2. BThe thyroid is now completely normal
  3. CThe levothyroxine dose is too low
  4. DThe levothyroxine dose is too high
7.Hard

A patient on stable digoxin starts amiodarone. A week later, the patient has nausea and visual changes, and the digoxin level is above the range. What is the most likely explanation?

  1. AAmiodarone has lowered potassium only
  2. BAmiodarone has raised the digoxin level
  3. CThe patient has started a viral illness
  4. DDigoxin has raised the amiodarone level
8.Hard

Which set of results most strongly suggests hemolytic anemia?

  1. ALow hemoglobin, high MCV, low vitamin B12, normal bilirubin
  2. BLow hemoglobin, low reticulocytes, low MCV, low ferritin
  3. CLow hemoglobin, low platelets, low white cells, low reticulocytes
  4. DLow hemoglobin, high reticulocytes, high unconjugated bilirubin, high LDH

Answer key

  1. 1. D · The urine albumin-to-creatinine ratio (ACR)
  2. 2. D · 0.8–1.2
  3. 3. B · Human chorionic gonadotropin (hCG)
  4. 4. D · Serum calcium
  5. 5. B · Heart failure is an unlikely cause of the breathlessness
  6. 6. D · The levothyroxine dose is too high
  7. 7. B · Amiodarone has raised the digoxin level
  8. 8. D · Low hemoglobin, high reticulocytes, high unconjugated bilirubin, high LDH

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