According to Quest Diagnostics 's latest financial reports the company's current revenue (TTM) is C$12.67 B. In 2023 the company made a revenue of C$12.27 B a decrease over the revenue in the year 2022 that were of C$13.41 B.The revenue is the total amount of income that a company generates by the sale of goods or services. Unlike with the earnings no expenses are subtracted.