Peter Bol has clocked his fastest 800m time since a provisional doping ban was lifted, edging the Australian record holder closer to locking in his spot for August's world athletics championships.

In just his second race since the 2022 Birmingham Commonwealth Games, Bol crossed the line behind the winner, Britain's Ethan Hussey, in one minute 45.19 seconds at the Merck Running Gala in Pfungstadt, Germany, on Wednesday night (early Thursday AEST).

It was an improvement on the 1:45.81 he registered on his competitive return in France last weekend.

The run in Pfungstadt provided further encouragement for Bol and his coach Justin Rinaldi that the tough automatic qualifying standard of 1:44.70 for the Budapest world titles is well within the runner's reach.

The Tokyo Olympics finalist and Commonwealth Games silver medallist has endured a tumultuous start to 2023.

Bol was informed in January he had failed an out-of-competition drug test the previous October when he recorded an elevated level of erythropoietin (EPO).

He was provisionally suspended on January 20 but the ban was lifted the following month when his B sample returned an atypical finding, meaning it was neither positive nor negative.

An investigation by Sport Integrity Australia is ongoing.

Groin and stomach complaints cruelled Bol's plan to return to racing in May, but he is now back to full fitness.

The 29-year-old's training partner and predecessor as the national 800m record holder, Joseph Deng, is the only Australian to have bettered the qualifying mark for Budapest having run 1:44.48 last weekend in Strasbourg - his fastest time in five years.

Deng will return to the track for the Stockholm Diamond League meet on July 2.

In other action in Pfungstadt, 17-year-old sensation Cameron Myers was third in the 1500m in 3:36.10, breaking Ryan Gregson's longstanding Australian under-20 record.