Joined: Jul 2002
Posts: 40,863
Likes: 3,115
From: Sacramento, California, USA
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
If your blood center can do double RBC, they can probably do platelets only. You keep your RBCs and you can ride the next day without any effect.
For next time.