How much does a Laboratory Assistant IV make in Covington, KY? The average Laboratory Assistant IV salary in Covington, KY is $126,949 as of September 01, 2024, but the range typically falls between $94,176 and $146,751. Salary ranges can vary widely depending on many important factors, including education, certifications, additional skills, the number of years you have spent in your profession. With more online, real-time compensation data than any other website, Salary.com helps you determine your exact pay target.