FREE NCCT Phlebotomy Technician Questions and Answers

Question 1

The blood lancet is used for the collection of blood specimens by:

Accepted Answer

Skin puncture

Answer

Explanation:
The blood lancet is used for the collection of blood specimens by skin puncture. Skin puncture involves pricking the skin to obtain a small blood sample for testing purposes. This method is commonly used for glucose monitoring, especially in diabetic patients, as well as for other blood tests such as hemoglobin levels or blood typing. Skin puncture is a less invasive and less painful method compared to venipuncture, which involves drawing blood from a vein. The blood lancet is a small, sharp instrument designed specifically for this purpose, allowing for a controlled and precise puncture of the skin to obtain the necessary blood sample.

Question 2

The most important step in the performance of a venipuncture is:

Accepted Answer

Positively identifying the patient

Answer

Explanation:
The most important step in the performance of a venipuncture is positively identifying the patient. This is crucial to ensure that the procedure is being performed on the correct individual, preventing any potential harm or errors. Positive identification helps to avoid situations such as misdiagnosis, incorrect treatment, or transfusion reactions. It ensures patient safety and promotes accurate and effective healthcare delivery. Selecting the correct needle gauge, selecting the appropriate cleansing agent, and selecting the appropriate tourniquet are also important steps in the procedure, but positively identifying the patient takes precedence as it directly impacts patient care and outcomes.

Question 3

When cleansing the venipuncture site, it is good practice to:

Accepted Answer

Cleanse the site from the inside out and allow it to air dry

Answer

Explanation:
When cleansing the venipuncture site, it is good practice to cleanse the site from the inside out and allow it to air dry. This method ensures that the site is thoroughly cleaned and reduces the risk of introducing any contaminants into the puncture site. Allowing the site to air dry also prevents any potential irritation or discomfort that may occur if the alcohol is not completely dry before the needle is inserted.

Question 4

To determine the size of the needle remember that the higher the gauge number the __________ the needle.

Accepted Answer

smaller

Answer

Explanation:
The higher the gauge number, the smaller the needle. This is because the gauge number refers to the thickness of the needle. So, a higher gauge number indicates a thinner needle, making it smaller in size.

Question 5

An instrument called a centrifuge:

Accepted Answer

Separates the cellular and liquid portions of the blood

Answer

Explanation:
A centrifuge is an instrument commonly used in laboratories to separate the cellular and liquid portions of the blood. It achieves this by spinning the blood sample at high speeds, causing the heavier cellular components to settle at the bottom of the tube while the lighter liquid portion remains on top. This separation allows for further analysis or testing of specific components in the blood, such as red and white blood cells or plasma.

NCCT - National Center for Competency Testing Practice Test

NCCT - National Center for Competency Testing Practice Test

FREE NCCT Phlebotomy Technician Questions and Answers