Ear versus thumb for blood glucose tests

Abstract

The assessment of random blood glucose concentration is one of the most commonly performed procedures in clinical practice. Traditionally, a digit is used for accessibility and rich blood supply. The digits, however, are very sensitive, resulting in pain for some patients. Previous work showed that sampling from the side of the thumb was less painful than lancet sampling from the finger or from venepuncture at the elbow. During that study the earlobe was suggested as an alternative sample site, as it is also accessible and vascular.