NHA CPT Exam Questions & Answers 2026 (21–30)

Question 1

When working as a phlebotomist, you might encounter several types of safety hazards, including:

TheoryPractice · Accepted Answer

All of the answers are correct.. Due to the presence of bloodborne and airborne pathogens is the reason why biological hazards are the most susceptible hazard when working in a clinical environment.

Electrical hazards exist in all environments which are involved in electricity usage.

Radioactive hazards may also be encountered if it is present in a preservative or reagent or if specific equipment is located nearby.

Question 2

Which of the following is NOT a type of variable that can affect the outcome of test results?

TheoryPractice · Accepted Answer

midanalytic. A variable is any factor that can be measured or counted that affects the outcome of test results and therefore patient care. There are three types of variables: preanalytic, analytic, and postanalytic. There is no midanalytic variable.

Question 3

In the hazard identification system, four small color-coded diamonds are grouped into a larger diamond. Numbers represent the severity of the hazard. What would the yellow diamond with the number 4 indicate?

TheoryPractice · Accepted Answer

Yellow indicates a reactivity/stability hazard. The number 4 indicates extreme hazard.. Yellow indicates a reactivity/stability hazard. These are chemicals or substances capable of exploding or toxic chemical reactions. The number system is coded as zero (no hazard) through four (most hazardous). In the example, the yellow diamond with a number 4 indicates an extreme reactivity/stability hazard.

Question 4

What elements needs to be verified for use on checking inventory?

TheoryPractice · Accepted Answer

All of the answers are correct.. Defective equipment such as tubes, needles, additives, preservatives and anything else used during a procedure can lead to a rejection of the specimen or inaccuracy test results. When checking inventory, all equipment should be carefully checked for indications of damage due to the excessive exposure to heat or moisture, and the expiration date. Expired or damaged equipment should be discarded properly.

Question 5

The hemoglobin A1c POC test reflects the average blood glucose level for the previous ________.

TheoryPractice · Accepted Answer

2–3 months. The hemoglobin A1c POC test reflects the average blood glucose level for the previous 2–3 months. Glucose attaches to hemoglobin A in RBCs and remains for the life of the cells. The typical life of an RBC is approximately 120 days.

Hemoglobin A1c is a better predictor of glucose control and the possibility of complications than is serum glucose. The normal value for hemoglobin A1c is less than 5.7.

Question 6

What does SST stand for?

TheoryPractice · Accepted Answer

Serum Separator Tube. SST stands for Serum Separator Tube. These tubes are also known as tiger- tops, red and gray or gold tops. SST tubes are placed in a centrifuge. The tubes contain a clot activator and a gel made from polymer. The activator, gel, and centrifuge separate plasma from blood cells.

Question 7

Which of the following chemistry and hematology tests is least affected by hemolysis?

TheoryPractice · Accepted Answer

phosphorus. Phosphorus is the test least affected by hemolysis. It is only slightly affected. The other choices are either seriously affected or moderately affected.

Question 8

A blood disease that results in abnormally shaped RBCs that block vessels and cause severe pain is ________.

TheoryPractice · Accepted Answer

Sickle cell disease. Sickle cell disease, the most common inherited blood disease in the United States, is a form of anemia in which the RBCs are abnormally shaped, like a crescent or sickle, and may clump together, resulting in blockage of vessels and oxygen depletion with severe pain (sickle cell crisis). With sickle cell disease, the abnormal cells only live 10-20 days instead of the usual 120 days, so the patient becomes chronically anemic, often requiring frequent transfusions.

Question 9

Which of these tests is seriously affected by hemolysis?

TheoryPractice · Accepted Answer

Aspartate aminotransferase.. Alanine aminotransferase is moderately affected by hemolysis. Acid phosphatase and Albumin are slightly affected by hemolysis.

Question 10

Which section of the lab would process a test for T and B cell markers?

TheoryPractice · Accepted Answer

serology. The serology or immunology department evaluates the patient’s immune response through the detection of antibodies. The test for T and B cell markers is a common test done by the serology/immunology department.

NHA CPT Exam Questions & Answers 2026 (21–30)

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