The Bhoys have lost two and drawn one of their past three league outings at Celtic Park but Thompson is aware Sunday's trip there will be as difficult as any.
"They've had a disappointing run at home in the league but it doesn't soften the difficulty of going to Celtic Park.
"It's the same old story - you've got to have every single one of your players playing out of their skin.
"You also have to hope Celtic have a few who have an off-day while you get a bit of luck.
"I don't think that because Celtic have lost a couple of games at home it's going to be any easier a task.
"It's still a monumental one to go there and get a result. But we're unbeaten in four and looking quite strong defensively."