POC Glucose Testing Using Finger or Heel Stick

An AACC member asked, when performing point-of-care glucose testing, what yields the most reliable results: the first or second drop of blood?

In reply, other members cited two studies: one indicated that the first drop is fine as long as the patient washes his or her hands, while the second study showed that blood glucose readings differ significantly between the first and second drops in patients with very low or very high blood glucose concentrations.


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AACC is a global scientific and medical professional organization dedicated to clinical laboratory science and its application to healthcare. Our leadership in education, advocacy and collaboration helps lab professionals adapt to change and do what they do best: provide vital insight and guidance so patients get the care they need.