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
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

5.0
Jan 6, 2026
Recommend
CEO approval
Business Outlook

Pros

Great company to work for

Cons

No really any con . They pay great

Viewing 67 - 69 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.