The Spot Platinum assay is the most comprehensive allergy testing available, with a total of 91 of the most common allergens in your region, including grasses, trees, weeds and shrubs, common indoor allergens, the 24 most common commercial pet food ingredients, as well as flea, staph and malassezia. Special allergens available upon request. The Spot Platinum equine assay represents the most comprehensive allergy testing available, with a total of 86 of the most common allergens in your region, including grasses, trees, weeds and shrubs, common barn allergens, grain mixes, foods (such as alfalfa, barley, corn, linseed, milo, oats, etc.), molds and biting insects common to horses.