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

What is the usual BUN-to-creatinine ratio in a healthy adult (using mg/dL)?

  1. AAbout 100:1 to 200:1
  2. BAbout 10:1 to 20:1
  3. CAbout 50:1 to 60:1
  4. DAbout 1:1 to 2:1
2.Easy

What is the main effect of parathyroid hormone (PTH) on serum calcium?

  1. AIt raises serum calcium
  2. BIt has no effect on calcium
  3. CIt only changes urine calcium
  4. DIt lowers serum calcium
3.Easy

What is the usual target INR for a patient taking warfarin for a deep vein thrombosis?

  1. A4.0–5.0
  2. B2.0–3.0
  3. C0.8–1.2
  4. D1.0–1.5
4.Medium

A patient starts high-dose prednisone. Which laboratory change should the nurse expect?

  1. AA fall in the white cell count
  2. BA rise in serum potassium
  3. CA fall in serum sodium
  4. DA rise in blood glucose
5.Medium

Which change in clotting tests is normal in late pregnancy?

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

A patient is scheduled for a liver biopsy. Which laboratory results should the nurse check before the procedure?

  1. AHbA1c and lipid panel
  2. BPlatelet count and PT/INR
  3. CSerum sodium and chloride
  4. DTSH and free T4
7.Hard

The nurse teaches a patient about the HbA1c test. Which statement shows a need for further teaching?

  1. A"I must not eat anything for 12 hours before the HbA1c test"
  2. B"A lower result means less risk of damage to my eyes and kidneys"
  3. C"My daily finger-stick readings still matter between the tests"
  4. D"The test shows my average glucose over the past few months"
8.Hard

A patient with SIADH is on fluid restriction. Which task can the RN delegate to unlicensed assistive personnel (UAP), such as a nursing or healthcare assistant?

  1. ADeciding when to recheck the sodium level
  2. BTeaching the reasons for fluid restriction
  3. CMeasuring and recording intake and output
  4. DAssessing the patient for new confusion

Answer key

  1. 1. B · About 10:1 to 20:1
  2. 2. A · It raises serum calcium
  3. 3. B · 2.0–3.0
  4. 4. D · A rise in blood glucose
  5. 5. C · Fibrinogen and D-dimer rise
  6. 6. B · Platelet count and PT/INR
  7. 7. A · "I must not eat anything for 12 hours before the HbA1c test"
  8. 8. C · Measuring and recording intake and output

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