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.

New worksheetPractise online with hints

For teachers: free to print, copy and use in class. Every new worksheet has new values and its own answer key. A link to ExamProblems on your course page is appreciated.

Name: ____________________   Date: ____________

1.Easy

Which condition commonly causes a high serum potassium?

  1. ARepeated vomiting
  2. BSevere diarrhea
  3. CKidney failure
  4. DLoop diuretic use
2.Easy

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

  1. AFollicle-stimulating hormone (FSH)
  2. BAntidiuretic hormone (ADH)
  3. CHuman chorionic gonadotropin (hCG)
  4. DThyroid-stimulating hormone (TSH)
3.Easy

On a liver panel, "direct bilirubin" refers to which form of bilirubin?

  1. ATotal urine urobilinogen
  2. BConjugated bilirubin
  3. CUnconjugated bilirubin
  4. DBilirubin in the stool
4.Medium

A patient with hyponatremia from SIADH starts tolvaptan. Why is the serum sodium checked frequently in the first day?

  1. AThe sodium always falls further
  2. BThe drug lowers blood glucose sharply
  3. CThe sodium can rise too quickly
  4. DThe drug causes severe hyperkalemia
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. BThe kidneys are failing and the patient needs dialysis
  3. CThe patient has had a myocardial infarction in the past day
  4. DHeart failure is an unlikely cause of the breathlessness
6.Medium

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

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

A middle-aged man has fatigue, joint pain, a raised ALT and new diabetes. His ferritin is very high and his transferrin saturation is above 60%. Which condition is most likely?

  1. AIron-deficiency anemia
  2. BHereditary hemochromatosis
  3. CAcute viral hepatitis A
  4. DAnemia of chronic disease
8.Hard

Ten days after chemotherapy, a patient has a platelet count of 9 × 10³/µL and reports a sudden severe headache and blurred vision. What is the priority?

  1. AAssess neurological status and report it at once as possible brain bleeding
  2. BDim the lights and encourage rest, as headaches are common after chemotherapy
  3. CEncourage the patient to drink more fluids and check the blood pressure later
  4. DGive acetaminophen (paracetamol) for the headache and reassess in 1 hour

Answer key

  1. 1. C · Kidney failure
  2. 2. C · Human chorionic gonadotropin (hCG)
  3. 3. B · Conjugated bilirubin
  4. 4. C · The sodium can rise too quickly
  5. 5. D · Heart failure is an unlikely cause of the breathlessness
  6. 6. C · After about 6–8 weeks
  7. 7. B · Hereditary hemochromatosis
  8. 8. A · Assess neurological status and report it at once as possible brain bleeding

Full step-by-step solutions: practise this topic on examproblems.com.