Phlebotomy Test Venipuncture Procedures 2

Question 1

Which vein is considered the FIRST choice for routine venipuncture in most patients?

Accepted Answer

Median cubital vein

Answer

The median cubital vein is the preferred first choice because it is large, well-anchored, and less painful to puncture.

Question 2

What is the maximum recommended time a tourniquet should remain applied before venipuncture?

Accepted Answer

1 minute

Answer

A tourniquet should not remain in place for more than 1 minute to prevent hemoconcentration and erroneous lab results.

Question 3

A phlebotomist notices the needle bevel is facing downward during insertion. What problem will likely occur?

Accepted Answer

Failure to enter the vein or poor blood flow

Answer

The bevel must face upward to allow smooth entry into the vein; a downward bevel causes the needle tip to press against the vein wall, impeding flow.

Question 4

When using an evacuated tube system, which tube should be filled LAST to avoid carryover contamination?

Accepted Answer

Lavender EDTA

Answer

EDTA in the lavender tube can contaminate other tubes and is drawn last among additive tubes to protect coagulation and chemistry results.

Question 5

A patient's arm shows signs of a hematoma forming during blood draw. What is the FIRST action to take?

Accepted Answer

Release the tourniquet and remove the needle immediately

Answer

A forming hematoma indicates blood is leaking into surrounding tissue; the tourniquet must be released and the needle removed to stop further extravasation.

Phlebotomy Practice Test

Phlebotomy Practice Test

Phlebotomy Test Venipuncture Procedures 2