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Asked • 05/15/19

Blood draw from the elderly or those with tiny veins?

A lot of people have very small veins making it next to impossible to draw blood. Would a nitroglycerin tablet (or some other vasodilator) before drawing blood help to enlarge veins?

2 Answers By Expert Tutors

By:

John W. answered • 05/19/19

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New to Wyzant

Medical Resident with diverse background in teaching

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