Iowa DNA & Drug Testing: Find Clinic Locations by City Drug Testing and DNA Testing Locations in Iowa: Health Street has 49 Clinics in 30 IA Cities AltoonaAmesAnkenyBurlingtonCarrollCedar FallsCedar RapidsClintonCliveCouncil BluffsDavenportDes MoinesDubuqueFort DodgeHiawathaIowa CityJohnstonKeokukMason CityMount PleasantMuscatineNorth LibertyOttumwaShenandoahSioux CityUrbandaleWaterlooWest BranchWest Des MoinesWest LibertyMarijuana Laws in Iowa:THC is not permitted for any legal use in the state of Iowa.