July 14, 2025 – Oklahoma City, OK – The Oklahoma Quarter Horse Racing Association (OQHRA) has confirmed the detection of Olodaterol through pre-entry hair testing protocols required for participation at Oklahoma racetracks. Olodaterol is a long-acting beta2-adrenergic agonist, a class of bronchodilators that includes strictly prohibited substances such as clenbuterol, albuterol, and carmoterol.
Olodaterol is not an approved substance in racehorses, and its presence constitutes a violation of integrity standards. The positive findings were made as a condition of entry through OQHRA-managed hair testing, not by the regulatory body, and as such, horses testing positive were ruled ineligible for entry.
While reports of Olodaterol have surfaced in other states through hair samples, OQHRA is not currently aware of any confirmed positives in blood or urine samples. This reinforces the value of hair testing in identifying substances that may otherwise go undetected.
“This is a clear example of why hair testing matters,” said Krissy Bamberg, Executive Director of OQHRA. “Whether used pre-entry to prevent horses from competing, or post-race for official adjudication, hair testing provides a longer detection window and a clearer picture of the medications and substances a horse has been exposed to.”
OQHRA will continue to support and expand the use of hair testing as part of its integrity and welfare program. In addition, the association will continue to advocate for the Oklahoma Horse Racing Commission to adopt hair testing as a standard matrix within the state’s official biological testing program. This includes both post-race testing and out-of-competition testing.
“We strongly encourage the Commission to expand its use of hair testing,” said Bamberg. “It’s a reliable, science-based tool that gives regulators the ability to detect long-term exposure to prohibited substances and strengthens our ability to ensure fairness and safety in the sport.”
OQHRA and our partner racetracks remain committed to identifying and deterring the use of new and emerging substances and protecting the integrity of racing in Oklahoma.
