RMA Venipuncture and Phlebotomy

Question 1

Which vein is most commonly used for routine venipuncture in adults?

Accepted Answer

Median cubital vein

Answer

The median cubital vein, located in the antecubital fossa (the inner elbow), is the most commonly used vein for routine venipuncture because it is large, superficial, and well-anchored.

Question 2

What is the purpose of applying a tourniquet before venipuncture?

Accepted Answer

To dilate the veins and make them easier to access

Answer

A tourniquet is applied proximal to the venipuncture site to temporarily restrict venous blood flow, causing veins to distend (enlarge) and become more visible and palpable.

Question 3

In the correct order of draw for multiple tube collection, which tube is collected FIRST?

Accepted Answer

Sodium citrate (light blue top)

Answer

In the order of draw for multiple tubes, the light blue top (sodium citrate) tube for coagulation studies is drawn first after any discard tube to prevent contamination from additives in other tubes.

Question 4

What does the term 'hematoma' refer to in the context of phlebotomy?

Accepted Answer

A collection of blood that escapes from a vessel into surrounding tissue

Answer

A hematoma is a localized swelling caused by blood leaking from a punctured vessel into the surrounding tissue, forming a bruise-like mass under the skin.

Question 5

Which color top tube is used to collect blood for a complete blood count (CBC)?

Accepted Answer

Lavender top (EDTA)

Answer

The lavender top tube contains EDTA (ethylenediaminetetraacetic acid), an anticoagulant that preserves blood cell morphology, making it the standard tube for CBCs and other hematology tests.

RMA Practice Test

RMA Practice Test

RMA Venipuncture and Phlebotomy