An Ounce of Prevention offers a range of CPR classes in Seattle, Washington. Courses includingÂ CPR, AED, First Aid, BLS and Bloodborne Pathogens are taught by highly experienced instructors at reasonable prices. All classes are taught as per the standards of the American Heart Association and a certification card with a validity of 2 years is issued upon the successful completion of the class. Classes are also taught in Spanish language. Moreover, onsite and online training facility is also available.