Labuschagne made 204 off 350 balls as part of Australia's mammoth total of 4-598 declared in the first Test against West Indies at Optus Stadium.

The 28-year-old would have had his heart in his mouth on 186 when a wayward shot sailed just millimetres over the hands of substitute fielder Shamarh Brooks at gully.

Then on 194, Labuschagne was dropped by Joshua Da Silva from the bowling of spinner Roston Chase.

Da Silva moved well to the leg side after the ball brushed Labuschagne's glove during an attempted sweep, but the deflection proved too tricky for the wicketkeeper.

Labuschagne kept his cool to bring up his double-ton minutes before lunch, driving paceman Jayden Seales to the boundary.

The shot moved Australia's total to 2-401.

The classy right-hander had the chance to surpass his highest Test score - the 215 he posted against New Zealand in Sydney in 2020.

But he was out on what turned out to be the final ball before lunch when he edged part-time spinner Kraigg Brathwaite behind.

Labuschagne sank his head into his hands upon the dismissal, but he was given a standing ovation as he walked off the field.

It was one of two wickets for skipper Brathwaite, who also snared the scalp of Travis Head for 99.

"Well, I wasn't surprised," Brathwaite said with a laugh when asked about snaring Labuschagne.

"I back myself to get a breakthrough. It was timely for those two wickets to be honest."

Labuschagne's record in Perth has been particularly impressive.

His only other Test appearance at Optus Stadium came before the COVID-19 pandemic in 2019 when he posted scores of 143 and 50 against New Zealand.

Australian Associated Press