Injectable steroids are injected into muscle tissue, not into the veins. They are slowly released from the muscles into the rest of the body, and may be detectable for months after last use. Injectable steroids can be oil-based or water-based. Injectable anabolic steroids which are oil-based have longer half-life than water-based steroids. Both steroid types have much longer half-lives than oral anabolic steroids. And this is proving to be a drawback for injectables as they have high probability of being detected in drug screening since their clearance times tend to be longer than orals. Athletes resolve this problem by using injectable testosterone early in the cycle then switch to orals when approaching the end of the cycle and drug testing is imminent.
Akhtar made a successful return to cricket in his first game in the Indian Premier League , playing for the Kolkata Knight Riders against the Delhi Daredevils . Defending a low score of 133 runs, Akhtar took four top order wickets which ultimately led to the Daredevils being restricted to 110 runs. He ended with figures of 4 wickets for 11 runs from three overs, a performance which earned him the player of the match award.   Akhtar denied that he had any point to prove with his performance, stating, "I just wanted to win the game." Knight Riders' captain Sourav Ganguly also acknowledged Akhtar's performance, "He came to the country with lots [of things] happening behind him...But he showed a lot of character."  It has been widely reported that the Knight Riders have released Akhtar from his contract due to his injury history but the Knight Riders' officials have denied these reports and said they are still in talks with the fast bowler.