Quiz 7: Point-of-care testing and laboratory procedures

Which of the following is the best instruction to give a patient on how to perform a peak flow test? "Take the deepest breath possible. Seal your lips around the mouthpiece. Blow out as hard and as fast as you can." "Take the deepest breath possible. Seal your lips around the mouthpiece. Inhale as much air as you can." "Blow all your air out of your lungs as much as possible. Seal your lips around the mouthpiece. Inhale as hard and as fast as you can." "Take the deepest breath possible. Seal your lips around the mouthpiece. Blow out in short, small puffs."

"Take the deepest breath possible. Seal your lips around the mouthpiece. Blow out as hard and as fast as you can."

Which of the following is the normal range for a total cholesterol? 40 to 150 mg/dL 70 to 100 mg/dL 130 to 200 mg/dL 150 to 220 mg/dL

130 to 200 mg/dL

When performing a scratch test for allergen testing, which of the following is the amount of time that must pass before checking for a wheal formation? 5 min 10 min 15 min 25 min

15 min

Which specimen collection performs tests for substances that are sporadically released into the urine? 24-hour urine clean catch random first void

24-hour urine

An adult who has normal hearing should be able to hear tones at which of the following decibels? 15 decibels 20 decibels 25 decibels 10 decibels

25 decibels

How many days prior to skin testing should the patient discontinue antihistamines? 30 days 15 days 3 days 7 days

3 days

Which of the following is the amount of time it takes to process a result for a urine pregnancy test? 3 min 1 min immediately 5 min

3 min

Which of the following could cause a specimen to be rejected from the lab? A fasting lab was drawn on a patient who ate breakfast A handwritten lab requisition was sent with the specimen The urine specimen was left at room temperature in a urine collection cup for 4 hr. The name on the specimen label does not match the lab requisition

The name on the specimen label does not match the lab requisition

Which of the following is the number of successful and measured breathing maneuvers that a patient mist complete during spirometry testing? Three Two Four One

Three

Which of the following is required to be included on a urine specimen label prior to sending it to the laboratory? Insurance carrier Medication patient is taking Time the urine was collected Diagnosis of the patient

Time the urine was collected

Which of the following is considered proper technique to avoid contamination during collection of a urine sample? Do not urinate directly into the urine container Avoid touching the inside of the container or the lid Add a preservative to the midstream container Ask the patient to wear gloves during collection into the container

Avoid touching the inside of the container or the lid

Which of the following is a normal range for a hemoglobin A1C? Less than 12.0% Less than 5.7% Less than 7.0% Less than 8.0%

Less than 5.7%

Which of the following identifiers should be used to verify the patient before obtaining a specimen for the laboratory collection? Name and date of birth Address and patient identification number Diagnosis and insurance information patient's name and insurance information

Name and date of birth

Which of the following is an error that would affect the test results in the preanalytical phase (before the specimen is sent to the lab) of quality assurance? Equipment malfunction Excessive turnaround time Failure to report Order entry error

Order entry error

Which of the following describes how an abnormal tympanogram appears on a graph when completed? A continuous up and down line A declining line A peak line A flat line

A flat line

In which of the following phases of quality assurance are instruments maintained and calibrated? Preanalytical phase Analytical phase Midanalytical phase Postanalytical phase

Analytical phase

Which of the following is required when obtaining and transporting a drug screening? Chain of command Chain of custody Medical insurance card Authorization forms from an employer

Chain of custody

Which of the following should be included when labeling a patient's specimen? Insurance company Diagnosis Address Collector's initials

Collector's initials

Ishihara color plates are used to screen for what sensory disorder? Distance vision Near vision Vision acuity Color deficiency

Color deficiency

Which of the following can cause a false positive when obtaining a specimen for fecal occult blood testing? Collecting the sample from the first bowel movement of the day Consuming vitamin C and iron supplements Consuming a high-fiber diet Discontinuing prescription medications

Consuming vitamin C and iron supplements