Paterson was taken to Erie County Medical Center after fainting during a morning flight from New York City into Buffalo.
He lost consciousness on a flight from JFK International Airport to Buffalo this morning.
A doctor was waiting for him when the plane landed in Buffalo.
He was given sugar and regained consciousness.
Patterson underwent several tests at the Erie County Medical Center, all of which came up negative.
A spokesman says the Lieutenant Governor will now undergo an additional series of tests with his personal physician in New York City.