Making a diagnosis is complicated.

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A diverse, comprehensive test menu

Get the insight you need when you need it. From screening, diagnosing, monitoring, to consulting across conditions, we are here to support your clinical decision-making.

  • Easily access our Test Directory to identify the right test across all specialties: cardiometabolic, neurology, oncology, women’s health, general health and wellness, infectious disease and immunology, prescription drug monitoring, and sports diagnostics
  • We can help you deliver on the promise of precision health with advanced diagnostics to help guide treatment decisions, including molecular, genetic, and genomic testing, companion diagnostics, and Watson Genomics from Quest, Core

Wide-ranging medical expertise

Complement your expertise with ours. With more than 700 medical and scientific experts on staff, Quest can quickly connect you with the information and insights you need.

  • Access our industry-leading team of MDs and PhDs across clinical, anatomic, and genomic specialties for live consultation
  • Find an expert online at or connect through our specialty helplines: 1.866.GENE.INFO (1.866.436.3463) to consult with a board-certified medical geneticist or lab-based genetic counselor; 1.877.40.RXTOX (1.877.407.9869) to consult with a toxicology specialist; 1.855.ALL.4KID (1.855.255.4543) to speak with a pediatric specialist

Seamless EHR integration

Quest interfaces with more than 600 EHR systems, more than any other lab company, easily integrating with your existing workflow. Our connective services help you take the right actions for your patients and ensure quality care across the continuum.

  • Our connectivity team helps certify, implement, and support EHR interfaces
  • We develop and manage a project plan that includes project initiation, interface validation, and interface implementation
  • Quest provides intensive support for 30 days from your “go live” date, and a 24/7 Connectivity Help Desk to keep you running smoothly