I have had it done during my last two medicals.
Nothing to upsetting......The Doc used a little "skin pricker" to take a sample from the tip of my index finger..only a couple of drops, so no fainting involved.
They use it for an initial cholesterol check and a haemoglobin check at each examination......It's really no big deal.!!!
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The Guv's got it wrong...
Happiness Is....A WARM Hostie