If you’ve ever had a blood test in the U.S., chances are it was done by Quest Diagnostics or Labcorp — the two largest diagnostic laboratories in the country.
Both are known for their wide testing networks, accuracy, and partnerships with hospitals and clinics.
But when it comes to routine labs — like cholesterol, thyroid, glucose, and complete blood count (CBC) — which one is faster, cheaper, and more convenient in 2025?
In this article, we’ll compare Quest vs Labcorp head-to-head on pricing, insurance, test speed, patient experience, and real customer reviews.
1. Overview: Two Diagnostic Giants
| Feature | Quest Diagnostics | Labcorp |
|---|---|---|
| Headquarters | Secaucus, NJ | Burlington, NC |
| U.S. Locations | 2,200+ | 2,000+ |
| Founded | 1967 | 1978 |
| Accepts Walk-ins | Yes (limited) | Yes (limited) |
| Insurance Accepted | Most major plans | Most major plans |
| Online Results Portal | MyQuest | Labcorp Patient Portal |
Both labs have decades of experience and perform millions of tests per year. They are CLIA-certified and CAP-accredited, meaning they meet national standards for lab accuracy and reliability.
2. Appointment Process & Accessibility
Quest Diagnostics
Quest allows patients to book online through the MyQuest portal, choose the test location, and receive reminders by text or email. Walk-ins are accepted, but appointments are strongly recommended.
Most centers open early in the morning — ideal for fasting tests.
Pros:
- Easy online booking.
- Results automatically linked to your doctor.
- Friendly for repeat patients.
Cons:
- Limited same-day slots.
- Some clinics have longer wait times (especially Mondays).
Labcorp
Labcorp offers a similar experience. You can schedule appointments through its Patient Portal or walk in.
Their check-in kiosks and QR code system make the process fast and contactless.
Pros:
- Smooth digital check-in.
- Many hospital-based locations.
- Supports direct physician orders.
Cons:
- Customer service varies by location.
- Wait time for walk-ins can be unpredictable.
🏁 Verdict: Both offer convenience, but Labcorp’s kiosk system gives it a slight edge for walk-in patients.
3. Insurance & Payment Options
Quest Diagnostics
Quest accepts almost every major insurance provider, including Blue Cross, Aetna, Cigna, Medicare, and Medicaid.
For insured patients, the out-of-pocket cost can be as low as $0.
However, uninsured patients often find Quest’s self-pay prices higher.
Labcorp
Labcorp also accepts the same insurance providers.
It offers a LabAccess Partnership Program, which provides discounted pricing for uninsured patients.
For instance, a basic blood panel might cost $90–$100 at Quest, but $70–$80 through Labcorp’s program.
🏁 Verdict:
If you’re uninsured, Labcorp can be cheaper thanks to its self-pay discounts.
If you’re insured, both are equally convenient.
4. Test Variety & Turnaround Time
Both companies offer thousands of tests, but routine labs remain their biggest category.
| Test Type | Quest Diagnostics | Labcorp |
|---|---|---|
| CBC (Complete Blood Count) | $45–$75 | $40–$65 |
| Lipid Panel (Cholesterol) | $55–$95 | $50–$85 |
| Thyroid (TSH) | $60–$120 | $55–$110 |
| Glucose / A1C | $40–$80 | $35–$70 |
| STD Panel | $150–$250 | $140–$230 |
Quest generally delivers results within 1–3 business days, while Labcorp often provides results within 24–48 hours for basic tests.
🏁 Verdict:
For routine blood tests, Labcorp is slightly faster and sometimes cheaper.
5. User Experience & Reviews (2025)
Quest Diagnostics
Quest is known for its professionalism and clean facilities. However, users often mention longer wait times and difficulty reaching support.
“Quest staff are great, but I waited 30 minutes past my appointment.” — Ashley L., Phoenix, AZ
“Results came on time, but their billing system is confusing.” — Mark J., Dallas, TX
Labcorp
Labcorp receives high praise for quick appointments and courteous staff, though some reviews note variability between locations.
“I was in and out in 15 minutes. Results hit my portal next morning!” — Rachel T., Miami, FL
“The nurse was professional, but the parking situation was bad.” — James P., Seattle, WA
🏁 Verdict:
Quest is known for accuracy and consistency, while Labcorp often wins on speed and customer satisfaction.
6. Technology & Online Portals
Both companies have user-friendly platforms to check results, pay bills, and download records.
- Quest (MyQuest): integrates with many EMRs (Electronic Medical Records) — great for long-term patients.
- Labcorp (Patient Portal): faster interface, offers real-time result notifications and bill tracking.
🏁 Verdict:
Both are reliable, but Labcorp’s app is slightly more intuitive and modern.
7. Real-World Cost Scenarios
| Scenario | Quest Diagnostics | Labcorp |
|---|---|---|
| Insured patient (Aetna) | $10–$30 copay | $10–$25 copay |
| Uninsured, routine labs | ~$120 total | ~$90 total |
| Same-day results | Available for limited tests | Available for most routine tests |
| Doctor integration | Excellent | Excellent |
| Online ordering | Available (MyQuest) | Available (Labcorp OnDemand) |
🏁 Verdict:
- If you’re insured, both are affordable.
- If you’re uninsured, Labcorp typically costs less.
8. Real User Ratings (2025)
| Platform | Quest Diagnostics | Labcorp |
|---|---|---|
| Google Reviews | ⭐ 4.1/5 | ⭐ 4.3/5 |
| Yelp | ⭐ 3.8/5 | ⭐ 4.0/5 |
| Trustpilot | ⭐ 3.9/5 | ⭐ 4.2/5 |
Common feedback:
- Quest: “Professional but slower.”
- Labcorp: “Fast, friendly, and efficient.”
9. Final Verdict
| Category | Winner |
|---|---|
| Insurance Coverage | Tie |
| Self-Pay Pricing | Labcorp 🏆 |
| Speed & Convenience | Labcorp 🏆 |
| Test Variety | Quest 🏆 |
| Integration with Doctors | Quest 🏆 |
| User Experience | Labcorp 🏆 |
👉 Overall Winner:
If your priority is speed, affordability, and convenience, Labcorp wins for routine lab tests.
If you need specialized testing or deep physician integration, Quest Diagnostics is still the best option.