The Colorado Springs-based U.S. Anti-Doping Agency has launched the opening phase of a voluntary pilot program it hopes will improve the accuracy of doping tests.
USADA will profile the body chemistry of 12 participating athletes using a series of blood and urine tests, and those measurements will be used as a baseline for subsequent tests.
Track athletes Brian Clay and Allyson Felix each announced yesterday they were part of the project, which is being called "Project Believe."
Clay said he was tested under the auspices of the program in March, before the world indoor championships.
The program is being set up to augment the current system after the Beijing Olympics.