Quest Diagnostics reviews

3.2

49% would recommend to a friend

(5,681 total reviews)

Jim Davis

56% approve of CEO

47% positive business outlook

Quest Diagnostics has an employee rating of 3.2 out of 5 stars, based on 5,681 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 Healthcare industry (3.5 stars).

Reviews by job title

6K reviews
1.0
Jan 7, 2026

Not worth it

Recommend
CEO approval
Business Outlook

Pros

It’s a large diagnostic lab

Cons

Toxic culture and treated as a commodity

Viewing 82 - 84 of 5,681 Reviews

Glassdoor has 6,072 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.