As you’ve probably heard else, an overnight health scare of epic proportions for Matt Harvey turned out to be a mere bladder condition caused by the Mets starter’s heroic refusal to use the men’s toilets at Port St. Lucie’s Tradition Field until the state of Florida makes ’em all gender neutral.  Since Harvey’s a quiet, unassuming guy who shuns the spotlight, Jay Horowitz came up with a crazy story about NYC’s most eligible bachelor simply holding it in too long, and regrettably, the Wall St. Journal’s Andrew Beaton bought it, hook, line and sinker.

“The main issue is I hold my urine in for too long instead of peeing regularly,” said Harvey, adding that he underwent a procedure to ensure everything was clear, and that he will indeed make his scheduled opening-day start in Kansas City.

There are many potential causes for blood in the urine said Dr. Ash Tewari, the Chair of Urology for the Mount Sinai Health System. They can start in many places—the urethra, prostate, bladder and kidneys—and may be triggered by an infection, stones, or in the unlikeliest of cases, some form of cancer.

Infection, said Dr. Tewari, is the most common reason for having a clot. And yes, holding it can be a factor: The longer the urine is in one’s system, the longer bacteria it contains has a chance to infect.

“Think about a pond versus a stream,” Dr. Tewari said. “A stream is less likely to have an infection, but a pond is more likely.”