Your blood, for “immortality.” | Image: Cath Virgina / The Verge, Getty Images
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It's an overcast Saturday morning when I give my 12th vial of blood for testing in six weeks. It's my 24th this year. At this point, I feel like a pro. I schedule these blood draws first thing in the morning so I don't get hangry, download the requisition papers ahead of time, avoid strenuou
