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State-of-the-art diagnostics that span the healthcare continuum

Every test result represents more than data—it’s a step toward clarity, confidence, and better outcomes.

From screening and monitoring to companion diagnostics, Quest delivers the scale, specialization, and innovation to power that progress—3,500+ tests, 1,500 advanced assays, and deep clinical expertise that support early detection, precise diagnosis, and informed intervention across every specialty.

For example:

Early detection to reduce chronic disease risk

Our prevention-focused approach emphasizes early identification of patients at increased risk for heart disease, diabetes, and other chronic conditions.

Our cardiometabolic test menu spans early identification of cardiometabolic risk to accurate diagnosis of endocrine disorders.

Learn more about our comprehensive cardiometabolic testing  

Testing from screening through treatment monitoring

Quest offers a consolidated solution that brings seamless access along the cancer care continuum. This means we have diagnostic solutions at every step of a patient’s cancer journey, from screening to diagnosis, treatment, prognosis, and monitoring.

Easy-to-use, at-home colorectal cancer screening enhances accessibility

We make the screening process convenient with InSure® ONE™, a fecal immunochemical test (FIT) that your patients can collect at home.
Learn more about our comprehensive cancer solutions

We can help break the stigma to protect more patients

Quest helps providers normalize prevention, screening, and management of infectious diseases—so patients get care without delay or fear.

Comprehensive test menu

  • Quantitative and qualitative assays for screening, diagnosis, treatment monitoring, and drug-resistance detection
  • Flexible specimen collection, including convenient PSCs and home-collection options

Key focus areas:

  • Hepatitis and HIV – Screening and viral-load monitoring
  • Tuberculosis (TB) – Modern interferon-gamma release assays (IGRAs) and culture testing
  • STIs – Broad NAAT and reflex panels for chlamydia, gonorrhea, trichomonas, syphilis, and more
  • Emerging and tickborne diseases – Molecular tests for Lyme, Babesia, Ehrlichia, and other regional pathogens
  • Respiratory pathogens – Tests and panels for flu, RSV, COVID-19, and other respiratory infections

Integrated support services

  • Patient reminders and digital scheduling
  • Electronic results delivery and secure patient access
  • Tools to improve follow-up and treatment compliance
Learn more here

We are at the forefront of drug monitoring

With a broad selection of tests, fast turnaround time, and accessible results available at the right cost, Quest can help you efficiently make informed care decisions.

Expert support

  • Toxicology experts to answer questions on test selection and results interpretation at 1.877.40.RXTOX (1.877.407.9869) 
Monday-Friday, 8:00 AM-10:00 PM EST
  • Drug monitoring consultation can be scheduled with our toxicology experts for more complex questions 

No surprise bills

  • We’re in-network for >90% of lives nationwide and have preferred lab network status with major health plans—a connection that enables us to deliver real-time pricing for patients at the time of service

Reporting

  • medMATCH® is a fast, easy-to-read report that indicates “inconsistent” when patient results do not match prescriptions provided by clinician
  • Be alerted to potential drug misuse or dangerous drug combinations
  • Track patient results over time
  • Quarterly practice-level data and analytics

Connectivity and service

  • Exceptional service and efficiency that aligns with your workflow
  • Interface with over 1,000 EHR systems
Explore our clinical drug monitoring solutions

For every stage of life, Quest is here

Delivering care for all stages of life requires testing that you can rely on for the insights you need. Quest makes advanced testing for men and women more actionable and affordable to support you and your patients.

Diagnostic solutions and care that support women’s wellness

Routine testing
  • Guideline-based cervical cancer screening
  • Sexually transmitted infection (STI) screening
  • Hereditary and colorectal cancer screening
  • Reproductive health
  • Cardiometabolic health
Symptomatic testing
  • Tests for gynecologic conditions, including chlamydia, gonorrhea, cervicitis
  • Pelvic inflammatory disease (PID) and vaginitis
  • Advanced testing to diagnose sexually transmitted infections (STIs)
Pregnancy and fertility
  • Comprehensive testing by trimester
  • Advanced prenatal genetic screening test menu, including carrier screening, non-invasive prenatal screening (NIPS), fetal diagnostics, and pregnancy loss testing
  • Fertility testing

We can help you and your patients overcome the stigmas that impact men’s health

A clear men’s health process can:
  • Encourage male patients to take preventive action when it comes to their wellness
  • Educate and clearly outline physician-recommended next steps
  • Improve patient experience and compliance with convenient, comprehensive testing access
Routine testing
  • Heart health
  • Colorectal cancer screening
  • Sexually transmitted infection (STI) screening
Symptomatic testing
  • Testosterone testing
  • Comprehensive testing for STIs
Learn more about our comprehensive solutions

We’re fueling the revolution in early risk assessment for cognitive decline

Neurological symptoms are often complex and non-specific, making early, accurate testing critical.  Early detection and prompt therapy can significantly improve patient outcomes.

Quest supports providers in identifying neurological disorders sooner—helping guide timely treatment and improved patient care.

Comprehensive test menu

  • 400+ neurology tests covering Alzheimer’s disease, dementia, and a wide range of neuroimmunological conditions
  • Blood and CSF testing methods for precise, actionable results

Key capabilities

  • Full Alzheimer’s and dementia portfolio
  • Advanced assays for complex neuroimmunological diseases
  • Integrated reporting for clear, clinician-friendly results

Featured test: Quest AD-Detect® 
Amyloid Beta 42/40 Ratio

Assessing risk for Alzheimer’s disease, the most common form of dementia: Alzheimer’s disease affects over 7M people in the US1 and may contribute to up to 70% of cases of dementia.2 Quest offers a simple, blood-based, easily accessible risk assessment option that can directly impact your care pathway.

Learn more about our comprehensive range of neurology testing 

Key testing expertise takeaways for Bayview

Your Quest team

Courtney Johnson, Cardio
Email Courtney

 

Adria Sexton, Women’s health
Email Adria

 

Mario Verticelli, Neurology
Email Mario

 

Nell Malbon, Drug monitoring
Email Nell

 

Cristina Manent Silvar, Infectious disease
Email Cristina

References

  1. Alzheimer’s Association. Quick facts. Accessed November 12, 2025. https://www.alz.org/alzheimers-dementia/facts-figures
  2. WHO. Dementia. March 31, 2023. Accessed November 12, 2025. https://www.who.int/news-room/fact-sheets/detail/dementia

 

 

Our company

Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA-certified laboratories that provide HIPAA-covered services.  Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA-covered services. 

 

Quest®, Quest Diagnostics®, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.