Quiz: Phlebotomy Equipment

A nurse is preparing to administer an injection to a patient. Which needle should she use if she needs the one with the smallest bore (diameter)?

• 16-gauge needle

• 20-gauge needle

• 21-gauge needle

• 23-gauge needle

A nurse is preparing to draw blood from a patient using an evacuated system. Which of the following needle gauges are commonly used for this procedure?

• 10, 12, or 14 gauge

• 20, 21, or 22 gauge

• 24, 25, or 26 gauge

• 16, 17, or 18 gauge

A patient requires a quick blood transfusion. Through which size needle will the blood flow the fastest to the patient's body?

• 23

• 22

• 21

• 20

A doctor needs to measure the volume of a liquid medicine. Which metric unit should they use?

• meter

• centimeter

• liter

• gram

In administering medicine through a syringe, the gauge of the needle indicates the following relationship: the larger the gauge number, the:

• longer the needle

• shorter the needle

• smaller the diameter of the bore

• larger the diameter of the bore

In a medical scenario, a syringe is generally used when drawing specimens and/or patients, EXCEPT for:

• arterial blood gases

• persons with rolly veins

• requests for multiple testing, requiring different anticoagulants and multiple tubes

• persons with fragile vein walls

A patient is undergoing a blood test. Which anticoagulant used by the medical lab prevents coagulation of blood by removing calcium through the formation of insoluble calcium salt?

• EDTA

• oxalate

• citrate

• lithium heparin

You are a medical professional preparing to draw blood from a patient for multiple tests. The patient has several tubes attached for different purposes. What would be the best and most cost-efficient technique to use in this situation?

• lancet

• syringe

• evacuated tube system

• butterfly system

A patient is rushed into the ER with a severe injury and is losing a lot of blood. The doctors decide to use the anticoagulant heparin to prevent blood clotting during the treatment. How does heparin work in this scenario?

• It activates tissue thromboplastin

• It prevents the conversion of plasminogen to plasmin

• It binds calcium ions

• It prevents the conversion of prothrombin to thrombin

A doctor is preparing to perform various blood tests on a patient. All of the following statements are true EXCEPT:

• Red-stoppered tubes are used for many tests, including serum enzyme testing.

• Gray-stoppered tubes are used for blood glucose tests.

• Lavender-stoppered tubes are used for CBC, WBC, and platelet testing.

• Gray-stoppered tubes are used for CBC and WBC tests.