Testing Locations » Texas » Harker Heights TX » Any Lab Test Now-Harker Heights – Any Lab Test Now-Harker Heights – Drug Testing Only (Preferred) Any Lab Test Now-Harker Heights – Any Lab Test Now-Harker Heights – Drug Testing Only (Preferred) Any Lab Test Now-Harker Heights – Any Lab Test Now-Harker Heights – Drug Testing Only (Preferred)201 E Central Texas ExpresswaySuite 640Harker Heights, TX 76548-2873 United States