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Reputation: 286

Can doctors test for vitamin deficiency with a finger prick?

I've been tired and sick more than usual this winter. There are several vitamins and minerals that I may or may not be missing out on: iron (I've had problems with this in the past), B12 (I don't always eat enough meat) or vitamin D (it's my first Seattle winter).

I don't know which, if any, of these I'm not getting enough of. The supplements I looked at seemed to have really high doses. I did some research and ended up even more confused.

I'd love to talk to a doctor about this, but I have a really hard time with blood tests. Would a finger prick be enough to test for these three things? Are all doctors willing to do finger pricks on adults? My last doctor refused to do finger pricks, but before that I had a pediatrician who did them all the time.

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  • 2008_0522stuff0016_small
    Reputation: 2052

    Whenever I get my Vitamin D levels checked (which is annually, as I tend to be deficient), I have to have a single vial of blood drawn. Finger pricks are good for blood sugar and white cell counts, but not so good for quantitative assays, especially if you need several different tests.

    What do you mean by having a hard time with blood tests? You faint, or your veins are tricky, or you have a needle phobia? If you tell your doctor, s/he can usually help you with those concerns.

    Tiredness can also be environmental (new street light or loud apartment mate) or a hormonal problem (hypothyroidism). You need to go to a doctor, be upfront about your problem, whatever it may be, with blood draws, and potentially get prescribed a multivitamin and a chat with a nutritionist.

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