Quest Diagnostics reviews

3.2

52% would recommend to a friend

(5,665 total reviews)

Jim Davis

58% approve of CEO

49% positive business outlook

Quest Diagnostics has an employee rating of 3.2 out of 5 stars, based on 5,665 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Quest Diagnostics employee rating is in line with the average (within 1 standard deviation) for employers within the Salud industry (3.4 stars).

Reviews by job title

6K reviews
4.0
Feb 22, 2026

Review

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Great company to work for

Cons

Opportunities for advancement can sometimes be limited, depending on team

5.0
Feb 19, 2026

Generally good

Recommend
CEO approval
Business Outlook

Pros

Generally good supportive staff and various locations.

Cons

Office politics somewhat stressful and can affect one’s performance.

Viewing 46 - 48 of 5,665 Reviews

Glassdoor has 6,056 Quest Diagnostics reviews submitted anonymously by Quest Diagnostics employees. Read employee reviews and ratings on Glassdoor to decide if Quest Diagnostics is right for you.