Iced: You can prove it was thousands of years old and can assume it wasn’t done with a sterile tube then. You cannot prove, however, that they didn’t use a straw or even just squeeze some blood out with their fingers.
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Iced: You can prove it was thousands of years old and can assume it wasn’t done with a sterile tube then. You cannot prove, however, that they didn’t use a straw or even just squeeze some blood out with their fingers.