A Raptors staffer said after the game that Bosh was still in the hospital, receiving intravenous fluids.
Bosh had been expected to return to the lineup after sitting out the previous six games with a sprained left ankle, but did not attend shootaround Friday morning. Coach Jay Triano learned about an hour before the game that Bosh was going to the hospital for tests.
The Raptors have gone 2-4 without Bosh, who last played in a Feb. 17 loss to Memphis and is averaging career highs with 24.5 points and 11.4 rebounds.
Information from the Associated Press was used in this report