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A comment on New study casts doubt on some fingerprick blood tests. Parent comment

Re:New study casts doubt on some fingerprick blood tests by such_a_casual on Friday November 27, 2015 @04:42PM (#10638962)
The study states that they got accurate measurements once they started taking 5 drops of blood which is less than 0.1 ml. A blood sample could vary from 3-10 ml according to the first thing I found on google. So it seems like all they have to do is take a few more drops to be accurate (which will still be an order of magnitude from the volume of traditional blood tests).

first thing on google: https://ethnomed.org/patient-education/blood/how-much-blood-...

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Re:New study casts doubt on some fingerprick blood tests by danieltillett on Friday November 27, 2015 @05:06PM (#10639048)
To get 100 µl out you need more than a finger prick. Once you go this way you might as well cannulate. There might be some special cases where you can get 100 µl but not 3 mL, but this market is not going to support the weight of a unicorn.
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Re:New study casts doubt on some fingerprick blood tests by such_a_casual on Friday November 27, 2015 @05:15PM (#10639082)
Are you claiming that 5 drops of blood cannot be obtained via finger prick?
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Re:New study casts doubt on some fingerprick blood tests by thescriptkiddie on Friday November 27, 2015 @06:05PM (#10639249)
If he is, he's generally right. You get 1.5, maybe 3 drops out before it seals back up. Finger lancets are very tiny needles, even smaller than those used for insulin injections.
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Re:New study casts doubt on some fingerprick blood tests by replicatorblog on Friday November 27, 2015 @06:23PM (#10639310)
I worked in diabetes where finger stick tests are the lingua franca. 3 microliter sample sizes were common about 10 years ago for home use systems using relatively fine lancets. Using something just a bit larger would pretty easily get you 5 drops of blood.
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Re:New study casts doubt on some fingerprick blood tests by danieltillett on Friday November 27, 2015 @06:08PM (#10639254)
Not out of one - well not easily or consistently.
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