DNA testing will be among 20 services available at the Tower Square Health and Wellness Expo on Wednesday. The event is scheduled from 11:30 a.m. to 1:30 p.m. in the food court on the second floor. The snow date is Thursday. True Blue Health and Wellness will be one of 20 vendors offering services, screenings and education during the free daylong expo. True Blue’s “True Blueprint Genetic Testing” uses cheek swabs to collect testing material. The cost of the test is covered by most health insurance plans.