Exam finds no definitive cause of 2021 Kentucky Derby winner Medina Spirit's death

A necropsy on 2021 Kentucky Derby winner Medina Spirit showed no definitive cause of death.

The California Horse Racing Board on Friday released the results of the examination done after the colt collapsed and died after a workout on Dec. 6 at Santa Anita.

Trainer Bob Baffert said the colt suffered a heart attack. Medina Spirit had just completed five furlongs in his second workout since finishing second in the Breeders' Cup Classic in November.

Medina Spirit's Kentucky Derby victory last May came under scrutiny after he tested positive for betamethasone, a legal medication that is not allowed on race day in Kentucky.

As a result, Baffert was suspended by Churchill Downs and barred from entering horses in the 2022 and 2023 Kentucky Derbies. He also was banned by the New York Racing Association from entering horses at its Belmont, Saratoga and Aqueduct tracks.

The necropsy on Medina Spirit found the anti-ulcer medication omeprazole and the diuretic Lasix in blood and urine samples consistent with the medication report filed with CHRB by the attending veterinarian.

The report said no other drugs, heavy metals or toxicants were detected.

The necropsy included gross examination of the body and internal organs, and specimen collection for microscopic examination, toxicology, drug testing, and genetic testing, with specimens also stored for possible future testing.

BREAKING: CHRB says “a definitive cause of death was not established” for Medina Spirit, noted that some of the necropsy findings are “compatible with, but not specific” for a heart issue.<a href="https://twitter.com/HR_Nation?ref_src=twsrc%5Etfw">@HR_Nation</a> <a href="https://t.co/dZE815jdTd">pic.twitter.com/dZE815jdTd</a>

After the examination was completed,