PCB banned Shoaib Akhtar for two years and fellow fast bowler Mohammad Asif for one year.
The two Pakistan players, who tested positive for performance-enhancing steroids, gave up their right to call for testing of 'B' samples while appearing before a drugs inquiry tribunal.
A member of the drugs inquiry tribunal said fast bowlers Shoaib Akhtar and Mohammad Asif could escape without a ban.
The panel will recommend if they are to be penalised for testing positive for the banned steroid nandrolone.
Both players have been told to stop talking to the media before their appearance next week at a doping tribunal.
Former Governor of Punjab Shahid Hamid and ex-cricketer Intikhab Alam have been named in the Pakistan Cricket Board's high-level committee to probe the dope scandal involving pace duo Shoaib Akhtar and Mohammad Asif.
Says he knew of SMS exchanges between bookmaker and players before the scam broke out
The former Australian captain said Shoaib Akhtar and Mohammad Asif must be fined heavily if they are proven guilty of using banned drugs.
It is alleged that he and Mohammad Asif smoked cannabis during Pakistan's recent ODI series in England.
The spot-fixing scandal happened in August 2010 during Pakistan's tour of England and then captain Salman Butt, Mohammad Asif and Mohammad Amir were banned by the ICC for their involvement.
The ICC has allowed Pakistan to include all-rounder Yasir Arafat and left-arm spinner Abdul Rehman as replacements for dope-tainted Shoaib Akhtar and Mohammad Asif in their Champions Trophy squad.
The Pakistan pacer is set to miss the upcoming three-Test series against India after failing to recover from his elbow injury.
Pakistan's top pacer Mohammad Asif will miss the five-match ODI series in India due to a chronic elbow problem.
Mohammad Asif may miss the last two ODIs against South Africa to be in prime shape for the tour to India.
"Asif has been advised to rest for one more match as he has not made a 100 percent recovery (from an elbow injury)," chief selector Salahuddin Ahmed told Reuters on Monday.
Reader Karen Osborn sent us pictures of Akhtar and Asif from South Africa.
The PCB called the fast bowler to attend a disciplinary hearing after he was sent home from the Twenty20 World Cup earlier this month for hitting a team mate.
Pakistan included injured fast bowlers Shoaib Akhtar and Umar Gul in their 15-man squad for next month's World Cup.
The Pakistani paceman could miss the semi-final against New Zealand due to a elbow injury.
The Pakistani speedster apologised for hitting fellow pacer Mohammad Asif with a bat following a verbal spat.
A heated argument led to the 32-year-old striking his fellow fast bowler Mohammad Asif on the thigh with a bat during nets for the Twenty20 World Cup.
Shoaib Akhtar's previous contract in the 'A' category was cancelled after he was banned for taking banned steroid.
"I just hope that the negativity surrounding this (doping) case does not spiral into anything else," he said.
The duo have not been included in Pakistan's squad for the second ODI against the West Indies, despite being cleared of doping offences.
On the other hand Shoaib Akhtar is not likely to get any reprieve, claims local media in Pakistan.
Shoaib Akhtar has filed an appeal with the PCB against the two-year ban imposed on him for a doping offence.
The PCB's anti-doping commission observed that Mohammad Asif's command of English is limited and could not possibly have understood the WADA regulations.
ICC president Percy Sonn said the judgment emphasises that cricket has a zero tolerance of drug use.
The Pakistani pace bowler was recalled to the squad for this month's one-day series against Sri Lanka in Abu Dhabi.
Former England captain Mike Gatting says they deserve to be ranked number two in the world.
The home team totalled 331 in their second innings before Pakistan, chasing 191 to win, reached the close on eight for nought.
At tea South Africa were 277 for six, a lead of 136. Pakistan were dismissed for 265 in reply to South Africa's first innings of 124.
Pakistan's Mohammad Asif took five wickets to lessen the impact of Ashwell Prince's century for South Africa on the third day of the first Test on Saturday.
South Africa were 254 for four at stumps on the second day of the first Test in reply to Pakistan's first innings of 313.
The case is closed after WADA said it would take the matter to the Court of Arbitration for Sport.