Difficulty: Medium

Average Score: 50%

When a phlebotomist performs a heel stick for the purposes of obtaining a PKU test, it is important to

Rationale

wipe away the first drop of blood.

When performing a heel stick for a PKU test, wiping away the first drop of blood is essential to ensure that the sample collected is not contaminated with tissue fluid or other contaminants that could affect test results.

A (wrap the site with a heel warmer for 30 min.) YOUR ANSWER

While warming the heel may help increase blood flow, it is not a necessary step specifically for the PKU test. The primary focus should be on collecting a clean blood sample, and warming the site is not part of the standard procedure for this test.

C (keep a pressure dressing on the site for the day.) YOUR ANSWER

Applying a pressure dressing is not required after a heel stick for a PKU test. The procedure typically involves a quick puncture with minimal bleeding, and excessive pressure or dressing could cause discomfort or complications that are unnecessary in this context.

D (target the central arch area of the foot for the least amount of discomfort.) YOUR ANSWER

The central arch area is not the ideal site for a heel stick; instead, the outer areas of the heel are preferred to minimize discomfort and ensure adequate blood flow. Targeting the wrong area can lead to complications and does not align with best practices for this procedure.

Conclusion

In the heel stick procedure for a PKU test, wiping away the first drop of blood is a critical step to avoid contamination and ensure accurate results. Other options, such as warming the site, applying a pressure dressing, or targeting the wrong area, do not contribute to the quality of the sample and could complicate the process. Adhering to proper protocols ensures the integrity of the PKU test and the comfort of the infant.

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