If you must draw from an arm with an IV line, which approach is recommended?

If you must draw from an arm with an IV line, which approach is recommended?

• A. Avoid drawing from the arm with the IV if possible
• B. Draw from the arm opposite the IV
• C. Draw distal to the IV after coordinating with the nurse and possibly stopping IV for a short period
• D. Stop the IV and draw from the same arm

Answer: (C)

Infusion lines can contaminate a blood sample or dilute it, so when an IV is in place you plan the draw to protect the sample’s accuracy. If you must draw from the arm with the IV, use a vein distal to the IV site—that is, further down the arm toward the hand—so the collected blood is less influenced by the IV fluids or medications. Coordinate with the nurse to briefly stop the IV if feasible. Temporarily halting the IV helps ensure the sample reflects the patient’s blood rather than infusion fluid, and drawing from below the IV minimizes the chance that any residual IV solution will enter the specimen. This approach preserves sample integrity while still allowing access when the other arm isn’t available. Avoid drawing from the IV arm without taking these precautions, as that can compromise test results and patient therapy.

Infusion lines can contaminate a blood sample or dilute it, so when an IV is in place you plan the draw to protect the sample’s accuracy. If you must draw from the arm with the IV, use a vein distal to the IV site—that is, further down the arm toward the hand—so the collected blood is less influenced by the IV fluids or medications.

Coordinate with the nurse to briefly stop the IV if feasible. Temporarily halting the IV helps ensure the sample reflects the patient’s blood rather than infusion fluid, and drawing from below the IV minimizes the chance that any residual IV solution will enter the specimen.

This approach preserves sample integrity while still allowing access when the other arm isn’t available. Avoid drawing from the IV arm without taking these precautions, as that can compromise test results and patient therapy.