It&#x27;s interesting that the only test cleared is one for herpes. Conceptually, a finger prick sample would very clearly work for binary, &quot;you&#x27;ve got it or you don&#x27;t&quot; tests, like STD tests (e.g. you&#x27;ve been able to buy home HIV tests for years that just require a few drops of blood from a finger).<p>Most blood tests, though, are about detecting whether <i>levels</i> of a substance are in a particular range - milligrams of cholesterol <i>per</i> deciliter of blood, mg glucose <i>per</i> deciliter, etc. Taking a much smaller sample is pretty much guaranteed to make the plus&#x2F;minus error range larger, and capillary blood from a finger prick will have a greater percentage of contamination from intracellular fluid.<p>Even glucose meters you can use at home are much less accurate than glucose readings taken with a venous draw in a lab. In that case, the benefit to a diabetic of being able to do frequent home testing outweighs the loss of accuracy. If you&#x27;re going to get work done by a lab, though, you are going to want it to be as accurate as possible, and in that scenario I don&#x27;t see how a finger prick will be able to compare to a venous draw.