At a recent 2013 NCAA national conference sickle cell testing of athletes was approved. (see NCAA link for article) 

Some people agree, some disagree but there could be a bigger issue. Newborn screening!

In the US all newborn babies are screened for various diseases. Sickle cell disease is one of the many diseases which are screened. Why do athletes not know their status? (sickle cell trait or not) If they were tested as a newborn baby their parents should have been told and follow-up educational services should have been provided.

See YouTube Video that asks these questions.

See this review by Dr. Bediako regarding this subject.