AMCA Phlebotomy and Blood Collection 2

Question 1

What does hemolysis of a blood sample indicate?

Accepted Answer

Red blood cells have ruptured, releasing their contents into the plasma

Answer

Hemolysis occurs when red blood cells rupture and release hemoglobin into the plasma, which interferes with many laboratory assays.

Question 2

A hematoma begins to form at the venipuncture site during blood collection. What is the FIRST action to take?

Accepted Answer

Remove the needle immediately and apply direct pressure

Answer

The needle must be removed immediately and firm pressure applied to prevent further blood from leaking into the surrounding tissue.

Question 3

Which tube color is associated with EDTA as an additive and is used for hematology testing such as CBC?

Accepted Answer

Lavender/Purple

Answer

Lavender or purple-top tubes contain EDTA, an anticoagulant that preserves cell morphology for complete blood count (CBC) testing.

Question 4

At what angle should a venipuncture needle be inserted to enter the vein correctly?

Accepted Answer

15–30 degrees

Answer

A 15–30 degree angle with the bevel up allows the needle to enter the vein smoothly without penetrating the posterior wall.

Question 5

What blood collection method is the standard of care for infants and newborns?

Accepted Answer

Capillary (heel stick) puncture

Answer

The heel stick (capillary puncture) is the safest, least traumatic method for collecting blood from newborns and infants.

(AMCA) American Medical Certification Association Practice Test