The seven-year-old has started 59 times for nine wins and 14 placings but only five of those victories were with Purvis.
Strathcona is coming off a last start sixth, beaten less than five lengths, by the Graham Hughes-trained Burraneer Buoy in a 1400 metre Benchmark race at Townsville on January 6.
“He’ll soon be an eight-year-old so he’s on the verge of retirement,” the 28-year-old Purvis said.
“The plan is to see how he goes in his next few starts and if he’s still racing well enough he’ll continue to race.