Thirty-five-year-old Kenyan distance runner Brimin Misoi Kipkorir has been suspended by the Athletics Integrity Unit (AIU) for doping.
On 22 November 2024, the Athlete provided a urine sample during an out-of-competition in Kaptagat, Kenya.

On December 15, 2024, the World Anti-Doping Agency (WADA) accredited laboratory in Lausanne, Switzerland, reported that the analysis of the sample of Kiporir’s tested positive for Furosemide. On Dec. 23, the AIU issued a notification to the athlete about the positive test.
Not only did Kipkorir not respond and did not have a Therapeutic Use Excemption, which athletes can sometimes attain for legitimate health issues, upon further testing, he was found his sample contained erythropoietin (EPO), the red blood cell booster.
Kipkorir ran the marathon as fast as 2:04:53 in 2023 at the Frankfurt Marathon. He was a career 2:10-athlete until 2022, when he jumped ahead in performance to run 2:06:11 in Frankfurt. He seemed to like Germany, as he ran well in Hamburg last year, clocking a 2:07:06 in April.
Briming with confidence, he doped with two different substances.
According to the Mayo Clinic, Furosemide belongs to a group of medicines called loop diuretics (also known as water pills). Furosemide is given to help treat fluid retention (edema) and swelling that is caused by congestive heart failure, liver disease, kidney disease, or other medical conditions. It works by acting on the kidneys to increase the flow of urine.
Kipkorir’s career is essentially over.