Type A-: The Loch Ness Monster

Representing a total 6.3% of the US population, your blood type is certainly rare, but, like the Loch Ness Monster, not so rare that you’ve gone completely undocumented. Following in Nessy’s mysterious footsteps, though your blood group’s origin story is unknown, it can be donated to help people of all A and AB blood types. If you’re feeling like making an extra “splash,” consider donating apheresis platelets or double red blood cells.