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Quest Diagnostics

3.2
(75 reviews)

Business Details

3244 Sycamore Rd, DeKalb, IL
60115, United States
(815) 901-3268
https://locations.questdiagnostics.com/il/dekalb/3244-sycamore-rd

About

Family Medicine
The Quest Diagnostics difference. Bringing together quality, speed, and technology to power advanced, affordable diagnostics for all. No trade-offs required.

Location

Quest Diagnostics
3244 Sycamore Rd, DeKalb, IL
60115, United States

Hours

Monday6:30 AM - 11:00 AM11:30 AM - 2:00 PM
Tuesday6:30 AM - 11:00 AM11:30 AM - 2:00 PM
Wednesday6:30 AM - 11:00 AM11:30 AM - 2:00 PM
Thursday6:30 AM - 11:00 AM11:30 AM - 2:00 PM
Friday6:30 AM - 11:00 AM11:30 AM - 2:00 PM
SaturdayClosed
SundayClosed

Reviews

3.2
75 reviews
5 stars
38
4 stars
2
3 stars
2
2 stars
5
1 star
28
  • TK
    Tom Keating
    Dec 27, 2025
    5.0
    Everything went smoothly; the phlebotomist was very professional and courteous.
  • SK
    Sarah Klein
    Dec 12, 2025
    5.0
    I went into Quest very cranky, but left feeling great!!!! The 2 women that did my labs were super easy to talk to, kind, and patient.
  • GM
    Gscott Morris
    Nov 3, 2022
    1.0
    Rude, disorganized and inefficient
  • CS
    Cathy Shuyama
    Oct 15, 2020
    5.0
    Very nice, gentle and professional personnel.

Frequently Asked Questions About Quest Diagnostics

What do I need to know before I arrive at a Quest Patient Service Center?

Please be aware that when you visit a Quest Patient Service Center: • Scheduled appointments are strongly encouraged and will receive priority. Please arrive and check in 10 minutes before your appointment time. If you check in more than 10 minutes late for your appointment, you will be served as a walk-in. • If you walk in, you will have to wait for the next available opening.

Do you accept walk-ins?

Scheduled appointments are strongly encouraged and will receive priority. If you walk in, you will have to wait for the next available opening.

Brand Certified Facts from Quest Diagnostics

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Certified April 05, 2026Yext Knowledge Graph
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