Rashid made his last Test appearance in January 2019 and has not played a first-class game since then, instead focusing on white-ball cricket.
But the 37-year-old leg spinner has never formally announced his Test retirement, leading to speculation that he could one day return to the longer format of the game.
Fellow spinner Moeen Ali answered captain Ben Stokes' call in 2023 and ended his Test retirement after 18 months for the Ashes battle with Australia on home soil.
Asked on Tuesday, ahead of England's T20 series against South Africa, what he would say should Stokes make the same call to him this winter, Rashid said: "It would be a no. I think I'm quite comfortable and confident of what I have been doing for the past seven years.
"I've finished red-ball cricket, so I'm quite confident in my own game in that sense.
"I'm sure It wouldn't even come that way because the spinners coming through now are very good.
"When they go there they'll put good performances in, and I'm confident they've got the spinners sorted."
Rashid made his 300th appearance for England in all formats during the recent ODI series against South Africa, which England lost 2-1.
He celebrates his 38th birthday in February, the same month the T20 World Cup starts in India and Sri Lanka, and wants to prolong his career for as long as possible.
Rashid said: "You take it game by game, series by series. But you obviously have that in the back of your mind of the age factor getting to 40 and 41."
The three-match series against South Africa, which starts in Cardiff on Wednesday and concludes at Old Trafford and Trent Bridge, accelerates England's planning towards the T20 World Cup in five months' time.
They head to Ireland later this month before playing another three-match series, away to New Zealand in October.
A three-match series against Sri Lanka takes place before the World Cup gets under way.
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