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A phlebotomist can palpate only one acceptable vein, on the medial (little-finger) side of the antecubital fossa. What is the primary risk of using this site?
A
The vein is too superficial and always collapses under evacuated-tube vacuum
B
Blood from this site is arterial and unusable for routine chemistry
C
Lymph drainage here dilutes the specimen with interstitial fluid
D
The median nerve and brachial artery lie immediately beneath, risking nerve injury or arterial puncture