In united states what is the chance of Onegative patients in

In united states, what is the chance of O-negative patients in gating compatible anti-k? 10% 90% 99% 15%

Solution

The Kell antigen system (also known as Kell–Cellano system) is a group of antigens on the human red blood cell surface which are important determinants of blood type. There are approximately 7% number of individuals having an O negative blood grouping in the US . For a better approximation, we can take this number to be 10%.

The answer should be

A) 10%

Since the O negative blood group does not contain any antigens on the surface , they will not be compatible with any other blood groups except O negative . But they can be universal donors and not receivers.