Substances that caused Kimbo Slice and Ken Shamrock to fail their drug tests have finally been revealed

Kimbo Slice and Ken Shamrock have been popped for steroids.

The lab records for both fighters' failed pre-fight urine tests for the Bellator 149 event in February have been revealed, as MMA Fighting reports.

Slice (real name Kevin Ferguson) tested positive for the steroid nandrolone and was also had elevated testosterone-to-epitestosterone ratio. Shamrock tested positive for nandrolone, had an elevated testosterone-to-epitestosterone ratio and was also flagged for methadone.

Shamrock's T-to-E ratio was 12.4:1, while Slice's was 6.4:1, which is above the 4:1 limit deemed acceptable by the The Texas and World Anti-Doping Agency.

Come get some

A photo posted by Kimbo Slice (@kimboslice) on Jan 15, 2016 at 6:14pm PST

The pair are expected to be slapped with a fine of up to $5,000, a 90-day suspension from the TWADA, who would be unlikely to license either man for a period of a year after the positive test. It is understood that both fighters have 10 days to request a B sample test.

Shamrock has some history with failing in drug tests. In 2009 the former UFC star tested positive for the steroids norandrosterone, noretiocholanolone and stanozololin following his win over Ross Clifton at WarGods: Valentine's Eve Massacre.

Slice won arguably the worst contest in the history of MMA by knocking out Dada 5000 at Bellator. Shamrock lost in somewhat controversial circumstances to legendary fighter Royce Gracie at the event.