Trichophyton indotineae is a dangerous fungal infection that causes ringworm and is increasingly resistant to common antifungal treatments. Scientists developed a rapid blood test-like diagnostic tool called qPCR that can accurately identify this specific fungus in less than 2 hours for just a few dollars. The test was created by comparing the genetic codes of different fungal species to find unique fingerprints that distinguish T. indotineae from similar-looking fungi.