National Certified Phlebotomy Technician General Flashcards

Which of the following best describes a management function that involves exercising quality control over raw materials, assemblies, produced materials and components, production-related services, management, production, and inspection processes with the aim of preventing covert production of defective goods or provision of subpar services?

Answer: Quality control.

This description accurately defines quality control (QC). Quality control is a management function focused on maintaining the quality of products or services by setting standards, inspecting materials and processes, and implementing corrective actions. Its aim is to prevent defects and ensure that all outputs meet specified requirements, thereby preventing the production of subpar goods or services.

Which needle gauge size has the largest bore (opening) among the rest?

Answer: 18 G

In needle gauge sizing, there is an inverse relationship between the gauge number and the needle's diameter (bore). A smaller gauge number indicates a larger needle bore. Therefore, among the options provided, an 18-gauge needle has the largest opening, making it suitable for viscous fluids or rapid infusions, while higher gauge numbers (like 21 G or 25 G) indicate smaller diameters.

How long should a tube be pre-warmed in an incubator before collecting a warmed sample, such as Cold Agglutinins?

Answer: 30 minutes.

For tests like Cold Agglutinins, which require the sample to be kept at body temperature, the collection tube must be pre-warmed. It is recommended to pre-warm the tube to 37°C (body temperature) in an incubator for at least 30 minutes prior to collection. This ensures that the agglutinins, if present, do not react prematurely due to cold, which could lead to inaccurate test results.

What should be done if a patient reports having previously fainted during venipuncture?

Answer: You may move them to an area in which they can lie down during the draw.

Patients with a history of fainting (vasovagal syncope) during venipuncture are at an increased risk of recurrence. To ensure their safety and prevent injury, the best practice is to have them lie down during the blood draw. This position helps maintain blood flow to the brain, reducing the likelihood of fainting and providing a safer environment should syncope occur.

Which test from the list below doesn't require fasting?

Answer: Complete blood count (CBC).

A Complete Blood Count (CBC) measures various components of the blood, such as red blood cells, white blood cells, and platelets. The levels of these components are generally not significantly affected by recent food intake, so fasting is typically not required for a CBC. In contrast, lipid profiles, iron tests, and renal function panels often require fasting for accurate results.

What organ of the human body has the tiniest veins?

Answer: Venules.

Venules are the smallest veins in the human body. They are microscopic vessels that collect deoxygenated blood from the capillaries and merge to form larger veins, which then carry blood back to the heart. While capillaries are even smaller, they are distinct from veins, serving as the primary site for exchange between blood and tissues.

What size venipuncture needle has the smallest gauge?

Answer: 23

In needle gauge sizing, there is an inverse relationship between the gauge number and the needle's diameter (bore). A larger gauge number indicates a smaller needle bore. Therefore, among the given options, a 23-gauge needle has the smallest opening, making it suitable for patients with fragile or small veins, such as pediatric or geriatric patients.