More reasons why you can't trust a woman's blood:

[Nobar King]

This tells how blood from a woman can kill a man:

Association of Blood Transfusion From Female Donors With and Without a History of Pregnancy With Mortality Among Male and Female Transfusion Recipients

Question Is there an association between red blood cell transfusion from female donors with and without a history of pregnancy and recipient mortality?

Findings In this cohort study that included 31,118 patients who received red blood cell transfusions, receipt of a transfusion from an ever-pregnant female donor was associated with a statistically significant increase in all-cause mortality among male recipients of red blood cell transfusions (hazard ratio, 1.13) but not among female recipients (hazard ratio, 0.99).

I finally have a good reason to refuse a woman's blood!