UFC 139 drug test results are in from the California State Athletic Commission (CSAC), who yesterday confirmed that all fighters competing on the "Henderson vs. Shogun" pay-per-view card were tested for illegal/banned substances -- and have all passed with flying colors.

While each competitor was screened for drugs of abuse like cocaine and marijuana, among others, the test for performance enhancing drugs (PED's) like steroids, have not yet been released.

Results from these battery of tests are expected in approximately two weeks.

"Henderson vs. Shogun" featured an epic five round war of attrition between former PRIDE stars and UFC light heavyweight contenders Dan Henderson and Mauricio Rua.

In the co-main event, Wanderlei Silva smashed his way back into the win column with a second round slaughter of San Shou striker Cung Le. Ryan Bader, Miguel Torres, Stephan Bonnar, Urijah Faber and Martin Kampmann also picked up victories at the "Shark Tank."

For complete UFC 139 results and blow-by-blow coverage of the main card action click here and here.