National Certified Medical Assistant (NCMA)

Question 1

When performing a venipuncture, which color-topped tube should be drawn first if blood cultures are not ordered?

Lavender Light Blue Red Green

Correct Answer:

Light Blue

Question 2

What is the additive in a lavender-topped tube and what is its purpose?

Sodium Citrate, to prevent coagulation Heparin, to inhibit thrombin formation EDTA, to prevent clotting by binding calcium Clot activator, to promote blood clotting

Correct Answer:

EDTA, to prevent clotting by binding calcium

Question 3

A medical assistant is instructing a patient on how to collect a clean-catch midstream urine specimen. Which instruction is correct?

Collect the very first part of the urine stream. Wipe the area, begin to urinate in the toilet, then collect the sample. Fill the container to the very top. No special cleaning is needed before collection.

Correct Answer:

Wipe the area, begin to urinate in the toilet, then collect the sample.

Question 4

When is the most appropriate time to label a patient's specimen container?

Before entering the patient's room to save time. After returning to the laboratory. Immediately after collection, in front of the patient. At the end of the day when all specimens are gathered.

Correct Answer:

Immediately after collection, in front of the patient.

Question 5

What is the purpose of inverting a blood collection tube after it is filled?

To prevent the blood from hemolyzing. To ensure proper mixing of the additive and the blood. To cool the specimen down more quickly. To release the vacuum inside the tube.

Correct Answer:

To ensure proper mixing of the additive and the blood.

Question 1

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About this Exam

Prepare with the National Certified Medical Assistant (NCMA) practice quiz. This question bank includes 30 questions covering medical, assistant, ncma, career, and lead. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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National Certified Medical Assistant (NCMA)

This practice set contains 30 questions from the matching question bank and focuses on medical, assistant, ncma, career, and lead. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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National Certified Medical Assistant (NCMA)

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