True or false: If a laboratory result falls within its reference interval, illness can be ruled out.
2 Diagnostic Tests and Procedures Online Quiz Questions
Use this free practice quiz with 20 questions to review 2 Diagnostic Tests and Procedures, test your knowledge, and prepare for your next test or exam.
True or false: If a patient's condition requires immediate care, urgent assessment or intervention should not be delayed while waiting for a test result.
- A
True
- B
False
What test records the heart's electrical activity? Enter the test abbreviation.
What is the standard abbreviation for the test that measures arterial oxygen and carbon dioxide and usually pH and bicarbonate? Enter the test abbreviation.
For a clean-catch urine sample, collect the urine in the sterile container.
When collecting sputum, the specimen should be material coughed from the rather than saliva.
A patient with an implanted medical device is scheduled for an MRI. Which action is most appropriate before the scan?
- A
Proceed without screening because MRI uses ionizing radiation rather than a magnetic field.
- B
Complete the required screening for implanted devices and metal before the MRI.
- C
Ask the patient to fast because all imaging tests require fasting.
- D
Cancel the MRI because contrast material is required for every scan.
A specimen is found to be mislabeled after collection. What is the appropriate response?
- A
Correct the label using the patient's identifiers from memory and send the specimen.
- B
Send the specimen and ask the laboratory to infer the correct patient.
- C
Follow policy and arrange recollection when indicated rather than guessing or relabeling from memory.
- D
Discard the specimen without notifying anyone or documenting the issue.
A patient's metabolic panel has an out-of-range value, but the patient reports no symptoms. What is the best interpretation?
- A
The abnormal result confirms a specific disease without further assessment.
- B
The result can be disregarded if the patient has no symptoms.
- C
The result may prompt follow-up, and its significance should be considered with the patient's clinical picture.
- D
The patient should stop all medicines until the result returns to normal.
Before a scheduled diagnostic test, which actions support patient safety and appropriate preparation? Select all that apply.
- A
Verify the test order and the patient's identity.
- B
Review relevant medicines, allergies, and history.
- C
Check the test-specific preparation instructions.
- D
Explain the purpose and steps in understandable language.
- E
Tell the patient to stop prescribed medicines without consulting the responsible clinician.
When reviewing a laboratory result, which factors should be considered to interpret it in context? Select all that apply.
- A
The patient's symptoms and examination findings.
- B
The patient's baseline values and trends over time.
- C
The timing of the test and relevant medicines.
- D
Whether preparation instructions were followed.
- E
Whether the result is abnormal in isolation, without considering the patient or report details.
When collecting blood cultures, describe the collection practices that help reduce contamination and improve detection, including how collection should be timed relative to antimicrobials.
A clinician orders prothrombin time/INR to monitor a patient's anticoagulant therapy. What does this test assess?
- A
They measure the heart's electrical activity and identify rhythm.
- B
They assess aspects of blood clotting and may help monitor certain anticoagulant therapies.
- C
They create images of the heart using ultrasound.
- D
They measure arterial oxygen and carbon dioxide.
A clinician wants to evaluate a patient's heart rate and rhythm by recording the heart’s electrical activity. Which test is designed for this purpose?
- A
Echocardiography
- B
Electrocardiogram
- C
Troponin test
- D
Coagulation test
Which metabolic panel includes selected liver-related tests? Enter the standard panel abbreviation.
True or false: A laboratory result outside its reference interval proves that the patient has a disease.
- A
True
- B
False
A patient is collecting a clean-catch urine specimen. Which instruction best helps prevent contamination?
- A
Collect the first urine produced directly into a nonsterile container.
- B
Touch the inside of the sterile container only after cleansing.
- C
Collect midstream urine in the sterile container without touching its inside.
- D
Collect urine from the specimen cup after it has been left open.
An ABG is collected to assess oxygenation, ventilation, and acid–base status. What type of blood sample does it require? Enter the adjective describing the sample.
Before a patient with an implanted device undergoes MRI, which action is appropriate?
- A
Follow the facility’s screening procedure for implanted devices and metal.
- B
Assume metal is safe because MRI uses ionizing radiation.
- C
Skip screening if the patient has had an MRI before.
- D
Use the same radiation precautions as for an X-ray because both use ionizing radiation.
A sputum culture is ordered. Which collection instruction best supports obtaining the intended specimen?
- A
Collect saliva after the patient has rinsed their mouth.
- B
Collect a swab from the inside of the cheek.
- C
Collect any fluid in the mouth, even if it was not coughed up.
- D
Follow instructions to collect material coughed from the lungs rather than saliva.