Pre-Training Test - Best Practice for Blood Collection Training

A micro-sample is generally collected from a 9-month old infant by ________.

• finger stick

• scalp stick

• heel stick

• venipuncture

For which of the following tests must blood be drawn from an artery?

• Anti-hemophilic factor

• Chromosome analysis

• Hemoglobin A1C

• Blood gases

When performing venipuncture on a patient with small, fragile veins, the best solution is to use a:

• winged infusion set with syringe.

• winged infusion set with evacuated tube.

• smaller-sized needle with evacuated tube.

• standard-sized needle with evacuated tube.

Which of the following is NOT a cause of hemolysis?

• Failing to air dry antiseptic

• Using a larger-than-needed needle

• Using a smaller-than-needed needle

• Shaking tubes vigorously

When collecting a sample of whole blood for testing using a lavender-capped Microtainer, how many inversions are needed to mix the blood with the additive?

• 6

• 8

• 10

• 12

Which of the following factors is likely to have the greatest effect on the results of a CBC processed within 2 hours of collection of the sample?

• Mealtime

• Mild exercise

• Environmental temperature

• Dehydration

If the laboratory protocol calls for the use of chlorhexidine solution for skin antisepsis for skin puncture or venipuncture, the antiseptic should NOT be used on infants younger than ______.

• 12 months

• 6 months

• 4 months

• 2 months

The maximum length of time a tourniquet should be left in place is ___________.

• one minute

• two minute

• three minute

• four minute

If unable to locate an adequate venipuncture site with a tourniquet applied, how long should the tourniquet be released before reapplying?

• 30 seconds

• one minute

• two minute

• three minute

When drawing blood from a patient in isolation for infection with Clostridium difficile, gloves should be donned __________.

• after palpating the site

• before entering the room

• immediately before preparing the site

• immediately after preparing the site