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Phlebotomy ekg practice questions

32 questions from the medical assistant practice test.

Phlebotomy ekg practice test

10 questions, graded as you go, with the reason for every answer. No sign-up.

What this covers

Sample questions

Before a venipuncture, how should the medical assistant confirm the patient's identity?

  1. Match the room number to the lab order
  2. Ask 'Are you Mr. Lopez?' and wait for a yes
  3. Check the name on the exam room schedule
  4. Have the patient state name and birth date
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D. Have the patient state name and birth date

Two identifiers stated by the patient and compared with the order prevent drawing the wrong person. A yes-or-no question fails because a confused or hard-of-hearing patient may simply agree.

Reference: Patient identification: two-identifier rule

A CBC is ordered. Which tube is drawn?

  1. Red
  2. Gray
  3. Lavender
  4. Light blue
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C. Lavender

A complete blood count needs whole blood with EDTA, the lavender tube. Light blue is for coagulation tests and gray for glucose testing.

Reference: CLSI venipuncture standard (GP41): order of draw and tube additives

Which tube is used for a prothrombin time (PT/INR)?

  1. Green
  2. Light blue
  3. Gold
  4. Lavender
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B. Light blue

Coagulation studies use the light blue tube with sodium citrate, which binds calcium reversibly so that clotting can be measured in the lab. EDTA in a lavender tube interferes with clotting tests.

Reference: CLSI venipuncture standard (GP41): order of draw and tube additives

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