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/sci/ - Science & Math

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>> No.5597772 [View]
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5597772

Dear /sci/,
I just took 5cc of blood with a non-sharp needle using aftershave as disinfectant. There is no need to say that shit was painful.

Anyway after only 40 sec it started coagulating. Is there something that you can easily use to don't make it coagulate?

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