Simona Halep has been provisionally suspended since October 2022 ©Getty Images

A hearing into Romanian tennis star Simona Halep’s positive drug test is expected to be staged on Sunday (April 30) following another postponement.

The former women’s singles number one tested positive for the banned substance roxadustat at the US Open in August last year.

Roxadustat is a hypoxia-inducible factor activating agent that can increase the blood's oxygen-carrying capacity, and it is therefore banned for its endurance-boosting capabilities.

Halep was provisionally suspended by the International Tennis Integrity Agency in October, forcing her to miss the opening Grand Slam tournament of the year at the Australian Open.

The two-time Grand Slam winner has denied any intentional wrongdoing and protested her innocence, claiming she was facing "such an unfair situation."

Her father, Stere Halep, revealed that the case would be heard by the Sports Resolutions tribunal at the end of the month.

"We still don’t know anything," he told Romanian newspaper Gazeta Sporturilor.

"We’re waiting just like you are.

"We don’t know what’s happening.

Stere Halep, centre, expects his daughter's case to be heard at the end of the month ©Getty Images
Stere Halep, centre, expects his daughter's case to be heard at the end of the month ©Getty Images

"The deadline was initially set for the 28th but from what we understand, it was postponed to 30th.

"We are doing OK.

"When you’re innocent, you fight tooth and nail."

Firicel Tomai, a former coach of Simona Halep, said that the hearing had experienced delays.

"The trial was supposed to take place twice so far but it was postponed for various reasons," said Tomai.

"Physical samples, the drugs or the can was sent, and as far as I know they were refused, a laboratory examination was requested."

Cristian Jura, a Romanian judge serving with the Court of Arbitration for Sport, revealed last December that it had been found that roxadustat had entered her body via a contaminated food supplement.

Halep won the women's singles title at the French Open in 2018 before triumphing at Wimbledon in 2019.

Her best performances at the other majors were an Australian Open runner-up finish in 2018 after she reached the 2015 US Open semi-final three years prior.

The 31-year-old, who is currently ranked world number 26, will be hoping to be cleared in time to enter the French Open, scheduled to be held from May 28 to June 11.