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Free Practice Quiz Question List

2 Laboratory and Specimen-Based Diagnostics Online Quiz Questions

Use this free practice quiz with 20 questions to review 2 Laboratory and Specimen-Based Diagnostics, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

Which instruction helps reduce contamination when collecting a clean-catch midstream urine sample?

  1. A

    Collect the first urine that comes out.

  2. B

    Touch the inside of the cup to the skin.

  3. C

    Begin urinating into the toilet, then collect urine midstream without touching the inside of the cup.

  4. D

    Add water to the specimen if there is not enough urine.

02
Choose one
1 point

A patient scheduled for a fasting blood test asks whether they may drink water and take their usual medicines. What is the best response?

  1. A

    Avoid all fluids and stop every medicine until after the test.

  2. B

    Plain water is generally allowed; follow the specific instructions and ask the ordering clinician about medicines. Do not stop medicines unless instructed.

  3. C

    Eat a light breakfast, but avoid coffee.

  4. D

    Take extra medication so the test result is more accurate.

03
True or false
1 point

If a patient misses or spills a urine sample during a 24-hour collection, they should contact the laboratory for instructions because the collection may need to be restarted.

  1. A

    True

  2. B

    False

04
Fill in the blank
1 point

The example adult platelet count reference range is to per microliter.

05
Fill in the blank
1 point

The example adult potassium reference range is to mEq/L.

06
Choose one
1 point

A patient begins a 24-hour urine collection at 7 a.m. Which action is correct?

  1. A

    Save the first urine at 7 a.m., then collect only daytime urine.

  2. B

    Urinate into the toilet at 7 a.m.; then collect all urine for the next 24 hours, including the final urine at 7 a.m. the next day.

  3. C

    Collect one sample at the end of the 24 hours.

  4. D

    Discard any urine passed overnight.

07
Choose one
1 point

A patient feels faint after a blood draw and the puncture site is still oozing. What is the best immediate response?

  1. A

    Help the patient lie down and apply firm pressure to the puncture site; seek assistance if symptoms or bleeding persist.

  2. B

    Ask the patient to stand and walk around while the site is uncovered.

  3. C

    Rub the puncture site vigorously.

  4. D

    Send the patient away without reassessing.

08
Written response
1 point

A fasting glucose result is 106 mg/dL. Using the example upper boundary of 100 mg/dL, how many mg/dL above that boundary is the result? Enter the exact difference; no rounding is needed.

09
Written response
1 point

A WBC result is 12,000 cells/µL. Using the example upper boundary of 11,000 cells/µL, how many cells/µL above that boundary is the result? Enter the exact difference; no rounding is needed.

10
True or false
1 point

A patient’s hemoglobin and hematocrit are below the reporting laboratory’s reference ranges. These findings may be consistent with anemia, but they need interpretation alongside the patient’s history and other results.

  1. A

    True

  2. B

    False

11
True or false
1 point

A serum creatinine above the laboratory’s reference range can indicate reduced kidney filtration, but it does not by itself confirm a diagnosis.

  1. A

    True

  2. B

    False

12
Choose all
1 point

A patient has urinary burning and a urinalysis positive for nitrites. Select all statements supported by the clinical information about interpreting this result.

  1. A

    Nitrites can support suspicion of a urinary tract infection.

  2. B

    A positive nitrite result proves that the kidneys have failed.

  3. C

    A negative nitrite result does not rule out a urinary tract infection.

  4. D

    Nitrites are a blood test result.

  5. E

    Symptoms and, when indicated, urine culture can help guide interpretation.

13
Choose all
1 point

Select all factors that can affect a laboratory reference range.

  1. A

    Reference ranges may vary with age.

  2. B

    Reference ranges may vary with sex.

  3. C

    All laboratories use the same reference range for every patient.

  4. D

    Reference ranges may vary with pregnancy.

  5. E

    Reference ranges may vary with testing method.

14
Open ended
1 point

A laboratory report flags one result slightly above its reference range. Explain how a clinician should interpret that result and why the flag alone may not establish a diagnosis.

15
Choose one
1 point

During a 24-hour urine collection, a patient accidentally spills one of the collected samples. What should the patient do?

  1. A

    Ignore the missed or spilled sample and submit the rest of the collection as complete.

  2. B

    Contact the laboratory for instructions; the collection may need to be restarted.

  3. C

    Replace the missing urine with water.

  4. D

    Collect one extra sample the following day and add it to the container.

16
Choose one
1 point

A patient's hemoglobin and hematocrit are below the laboratory's reference ranges. Which interpretation is most appropriate?

  1. A

    The findings may be consistent with anemia, but require interpretation with the patient's history and other results.

  2. B

    The findings prove the patient has a bacterial infection.

  3. C

    The findings prove the patient has a clotting disorder.

  4. D

    The results are normal because CBC values do not vary.

17
Choose one
1 point

A patient's serum creatinine is above the laboratory's reference range. What does this finding generally suggest?

  1. A

    It can indicate reduced kidney filtration, but must be interpreted with other findings and clinical context.

  2. B

    It confirms liver failure.

  3. C

    It proves the patient is dehydrated.

  4. D

    It is a direct measure of platelet function.

18
Choose one
1 point

A result is flagged slightly above range on a laboratory report. Which conclusion is best?

  1. A

    The result establishes the disease associated with the test.

  2. B

    Interpret it using the report's reference range, clinical findings, and other results; one abnormal result alone may not establish a diagnosis.

  3. C

    Compare it directly with any reference range found online.

  4. D

    A result within range always rules out disease.

19
Written response
1 point

An adult patient's sodium result is 132 mEq/L. Using the example reference range of 135–145 mEq/L, by how many mEq/L is the result below the lower end? Use the example range only; this calculation does not establish a diagnosis.

20
Written response
1 point

A fasting glucose result is 108 mg/dL. Using the example reference range of 70–100 mg/dL, by how many mg/dL is the result above the upper end? Use the example range only; this calculation does not establish a diagnosis.