Popular Brooklyn featherweight Heather Hardy has been slapped with a six-month suspension and $10,000 fine by the New York State Athletic Commission after testing positive for a banned substance, according to BoxingScene.com.

A test conducted by the Voluntary Anti-Doping Agency a day before her loss to Amanda Serrano on September 13 in New York showed traces of Furosemide (also known as Lasix), a diuretic that prevents one’s body from taking in too much salt.

Athletes have been known to use diuretics as a masking agent to cover up the presence of other banned substances. Diuretics are also known to aid in weight cutting.

The results of Hardy’s test were made public on October 3. Hardy (22-1, 4 knockouts) rushed to defend herself on social media, claiming she had been taking medication for her period.

My Vada test results just came back, negative for Performance Enhancing Drugs, but detected a prescription drug used to treat kidney and heart problems. — Heather Heat Hardy (@HeatherHardyBox) October 3, 2019

I told the testing & med professionals what I took heading into the fight, a prescription med for period symptoms. They acknowledge this, and my now team is getting to the bottom of the findings. — Heather Heat Hardy (@HeatherHardyBox) October 3, 2019

In a statement, Hardy claimed she “had NO idea” that a prescription medicine she took for her period was a banned substance and vowed to clear her name.