Testing Locations » Texas » Houston TX » Any Lab Test Now – Royal Oaks – Any Lab Test Now – Royal Oaks – Drug Testing Only (Preferred) Any Lab Test Now – Royal Oaks – Any Lab Test Now – Royal Oaks – Drug Testing Only (Preferred) Any Lab Test Now – Royal Oaks – Any Lab Test Now – Royal Oaks – Drug Testing Only (Preferred)11807 Westheimer RdSte 560Houston, TX 77077-6790 United States