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1 Interpreting Laboratory Results and Responding to Critical Values Online Quiz Questions

Use this free practice quiz with 20 questions to review 1 Interpreting Laboratory Results and Responding to Critical Values, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

A patient has a result slightly outside the printed reference range, no new symptoms, and no critical-result notification. What is the best interpretation?

  1. A

    It always indicates a medical emergency.

  2. B

    It should be interpreted alongside the patient’s condition and relevant trends.

  3. C

    It can be ignored if the patient feels well.

  4. D

    It proves the specimen was collected incorrectly.

02
True or false
1 point

An abnormal laboratory result and a critical laboratory result mean the same thing.

  1. A

    True

  2. B

    False

03
Fill in the blank
1 point

A result outside the applicable reference range is an .

04
Written response
1 point

What four-letter acronym names the report structure that organizes a clinical update into Situation, Background, Assessment, and Recommendation/Request?

05
Choose one
1 point

A nurse is reviewing a laboratory result. Which approach best accounts for differences in testing methods and reference ranges?

  1. A

    Use the range and units printed on the patient’s report.

  2. B

    Use a range found online, even if it is from a different laboratory.

  3. C

    Assume all laboratories use identical ranges and units.

  4. D

    Treat the printed range as proof that the patient is healthy.

06
True or false
1 point

If a patient appears unstable after a critical-result notification, the nurse should initiate the applicable emergency response rather than delay urgent care while waiting for repeat testing.

  1. A

    True

  2. B

    False

07
Fill in the blank
1 point

A critical result meets defined criteria for an urgent, potentially life-threatening finding that requires prompt and action.

08
Written response
1 point

What communication approach ensures that the receiver acknowledges a finding and that the next steps are clear?

09
Choose one
1 point

A patient’s hemoglobin has been steadily falling, and the patient reports increasing weakness. Which interpretation is most appropriate?

  1. A

    Wait until a critical threshold is reached before considering the trend.

  2. B

    Consider the falling trend alongside the patient’s increasing weakness and possible signs of bleeding.

  3. C

    Ignore the trend if the latest value is not flagged critical.

  4. D

    Compare the value only with a reference range from a different laboratory.

10
Choose all
1 point

A laboratory calls with a critical result. Which details should the nurse verify or clarify as part of confirming the information? Select all that apply.

  1. A

    Verify the patient identifiers.

  2. B

    Confirm the test and reported result.

  3. C

    Confirm the units and collection time.

  4. D

    Verify who called from the laboratory.

  5. E

    Assume the units are standard if they were not stated.

  6. F

    Use the result from whichever patient has the most similar name.

11
Choose all
1 point

Which details belong in documentation of a critical-result response, according to facility policy? Select all that apply.

  1. A

    The result and its units.

  2. B

    The notification time and who was contacted.

  3. C

    The patient’s assessment and actions taken.

  4. D

    Orders received and any further escalation.

  5. E

    The patient’s response.

  6. F

    Only a note that the clinician was notified, with no other details.

  7. G

    A guess about the cause of the result, even if it was not assessed.

12
True or false
1 point

A nurse may independently change treatment in response to a laboratory result even when the change is outside the nurse’s authority and facility protocols.

  1. A

    True

  2. B

    False

13
Open ended
1 point

A laboratory reports a critical result for a patient. Explain how you would respond from the initial assessment through follow-up, including how you would verify and communicate the result and what details you would document.

14
Choose one
1 point

A patient’s result is flagged as outside the reference range on the current report. A range from another laboratory would classify the same value differently. Which approach is most appropriate?

  1. A

    Use the other laboratory’s range because it is more familiar.

  2. B

    Interpret the result using the range and units on the patient’s report.

  3. C

    Assume the result is critical because it is outside a range.

  4. D

    Ignore the result if the patient reports feeling well.

15
Choose one
1 point

A patient’s hemoglobin has fallen steadily across several results, and the patient now has increasing weakness and signs of bleeding. Which interpretation best accounts for both the results and the patient’s condition?

  1. A

    The downward trend and worsening symptoms increase concern and warrant prompt attention.

  2. B

    The latest value alone determines whether there is a concern.

  3. C

    The trend is reassuring because the result has not reached a critical threshold.

  4. D

    The symptoms should be considered separately from the laboratory trend.

16
Written response
1 point

What term describes results commonly observed in a defined population and used as a comparison when interpreting a laboratory result?

17
Written response
1 point

A laboratory result seems implausible given the patient’s condition. Name one category of potential problem that should be checked promptly. Enter a short term.

18
Choose one
1 point

A laboratory calls with a critical result, but the reported collection time is unclear. What should the nurse do to confirm the information?

  1. A

    Confirm only the test name, then rely on the chart for all other details.

  2. B

    Ask the laboratory to repeat the result without checking the patient identifiers.

  3. C

    Verify the patient identifiers, test, result, units, collection time, and caller details.

  4. D

    Record the result as reported and resolve any discrepancies at the next routine review.

19
Choose one
1 point

A laboratory reports a critical result, and the patient appears unstable. What should the nurse do first?

  1. A

    Wait for a repeat test before taking action.

  2. B

    Initiate the applicable emergency response and call for help, without delaying urgent care for routine tasks.

  3. C

    Complete routine charting before assessing the patient.

  4. D

    Wait until the responsible clinician returns the call before responding to the instability.

20
Choose one
1 point

A nurse has communicated a critical result, but the responsible clinician cannot be reached promptly. What is the appropriate next step?

  1. A

    Leave one message and assume the result has been addressed.

  2. B

    Wait until the next shift to try again.

  3. C

    Ask the laboratory to take responsibility for contacting the clinician.

  4. D

    Continue through the escalation pathway required by facility policy.