Rapid mono test kits can be purchased by anybody to be done at home which may save parents/patients money in doctor visits as well as getting an answer right away. Indeed, should mono testing be positive, than you know that the patient is contagious... and that there's not much to do other than give it time to resolve. A doctor visit may still be worthwhile since there are other possible causes of a sore throat including strep throat, cancer , aphthous ulcer , sinus infection , reflux …