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Venipuncture Procedures Flashcards

7 cards from real Phlebotomy Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. A patient on warfarin therapy requires venipuncture. What extra precaution is MOST important post-draw?

    Answer: Apply firm pressure for an extended period until bleeding stops

    Anticoagulated patients have prolonged clotting times and require extended pressure application—often 5 minutes or more—to achieve hemostasis.

  2. Which of the following describes the CORRECT skin antiseptic technique before venipuncture?

    Answer: Clean in a concentric circle moving outward from the center

    Cleaning from the center outward in a spiral motion prevents reintroducing contaminants from the surrounding skin back to the puncture site.

  3. What is the recommended alcohol drying time before performing venipuncture?

    Answer: 30–60 seconds

    Allowing isopropyl alcohol 30–60 seconds to air-dry ensures full antiseptic effect and prevents specimen contamination or patient stinging.

  4. Which patient position is PREFERRED to reduce the risk of vasovagal syncope during venipuncture?

    Answer: Lying supine or seated with arm supported

    A supine or well-supported seated position minimizes the risk of fainting by maintaining cerebral perfusion if a vasovagal reaction occurs.

  5. What is the CORRECT action if a patient has a dialysis fistula in one arm?

    Answer: Avoid drawing blood from the fistula arm entirely

    The fistula arm must never be used for venipuncture, blood pressure, or IV access, as damage can destroy the fistula and eliminate dialysis access.

  6. Which tube additive is matched CORRECTLY with its function?

    Answer: Sodium citrate – binds calcium to prevent coagulation

    Sodium citrate reversibly binds calcium ions, preventing the coagulation cascade and preserving the sample for coagulation studies.

  7. A phlebotomist needs to collect a specimen from a patient with only one usable arm that has an IV line running. What is the BEST approach?

    Answer: Turn off the IV for 2 minutes, then draw below the IV site

    Turning off the IV for at least 2 minutes and drawing distal to (below) the infusion site minimizes IV fluid dilution of the blood sample.