DETROIT — Jon Niese is almost in the clear for his next scheduled start.

The Mets lefty underwent a battery of tests at Henry Ford Hospital on Tuesday, after experiencing a rapid heartbeat pitching Saturday in Texas.

Mets assistant general manager John Ricco said Niese passed an EKG, echocardiogram and treadmill stress test.

The Mets are waiting for the results of another test. Niese had a heart monitor attached to his belt during pregame workouts before the Mets faced the Tigers. Niese will return the heart monitor Wednesday, at which time it will be determined if there are any abnormalities.

After leaving Saturday’s start in the sixth inning, Niese said he’s dealt with a rapid heartbeat before. Ricco said the team was unaware of that fact.

Niese’s next scheduled start is Friday night against the Yankees at Citi Field.

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The Mets also updated the injury recoveries of David Wright and Johan Santana. Both are working out in Florida.

Wright has been out since May 16 with a stress fracture in his back, but took groundballs Tuesday and is expected to hit off a tee Wednesday.

Santana, coming off shoulder surgery, is continuing to play long-toss but could throw off a mound for the first time as soon as Wednesday.

With AP