ION Drug and Alcohol Testing and DOT Compliance is happy to announce the opening of our office and Testing Facility at 7809 US Hwy. 301 N., Tampa, FL 33637. We are conveniently located just north of I-4 on Hwy. 301 by the Truck Stop. Call for your appointment for drug or alcohol testing and to find out more about our services. 813-720-6647.