Quest Diagnostics reviews

3.2

50% would recommend to a friend

(5,672 total reviews)

Jim Davis

57% approve of CEO

48% positive business outlook

Quest Diagnostics has an employee rating of 3.2 out of 5 stars, based on 5,672 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
5.0
Aug 27, 2025

Best Organization

Recommend
CEO approval
Business Outlook

Pros

Quest Diagnostics is truly one of the best organizations I have worked with. The company has well-structured policies, a supportive work culture, and opportunities to learn and grow across different domains. The rotational shifts are managed effectively, ensuring a good work-life balance

Cons

The overall experience is excellent; however, the effectiveness of the workplace depends significantly on the lead/manager at both GIC and the US. Having a strong, empathetic, and transparent Team Lead and Manager makes all the difference. At times, inconsistencies in people management can affect team morale.

Viewing 145 - 147 of 5,672 Reviews

Glassdoor has 6,063 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.