Scientists developed a quick molecular test to identify two specific commercial oyster mushroom strains (SPOPPO and ALLERPO) in less than 30 minutes using a technique called LAMP. These sporeless mushroom strains were created to reduce respiratory health problems that workers develop from inhaling mushroom spores. The new test helps mushroom producers and breeders quickly verify strain identity in the field to prevent unauthorized copying of these valuable varieties and to catch products of suspect origin.