Quest Diagnostics

Quest Diagnostics is a Fortune 500 company and the world's leading provider of diagnostic information services that patients and doctors can rely on to make better healthcare decisions. Quest operates 2,000+ patient service centers, performs 200+ million tests annually, and supplies its Quanum family of solutions for connecting laboratories, EHR systems, and health plans.

Quest Diagnostics publishes 2 APIs on the APIs.io network. Tagged areas include Diagnostics, Fortune 500, Healthcare, Laboratory, and Lab Services.

Quest Diagnostics’ developer surface includes engineering blog and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

8.1/100 minimal ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessEnterpriseApproval

2 APIs

Diagnostics Fortune 500 Healthcare LaboratoryLab Services

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 8.1/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 2.2 / 17

Operational Transparency 0.6 / 11

Contract Governance 0.0 / 10

Discoverability 5.0 / 9

Regulatory Posture 1.1 / 15

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Health regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/quest-diagnostics: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

Quanum Data Exchange

Quanum Data Exchange is Quest's interoperability service for delivering laboratory and diagnostic results into electronic health record systems, enabling integrated ordering and...

Quanum eLabs

Quanum eLabs is a web-based laboratory ordering and results delivery service that integrates with provider workflows so clinicians can submit orders, track samples, and review Q...

Pricing Plans 1

Published pricing tiers and plan structures.

Quest Diagnostics Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Quest Diagnostics Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Quest Diagnostics Finops

FINOPS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Quest Diagnostics Domain Security

TLSv1.2 · HSTS · DMARC

SECURITY

Press 5

Recent news and press coverage referencing this provider.

Quest Diagnostics to Acquire PathAI ...

2026-05-25

Quest Diagnostics to Collaborate with Google Cloud ...

2026-05-25

Automation and artificial intelligence are reshaping the ...

2026-05-25

We are excited to introduce Quest AI Companion, a new AI ...

2026-05-25

Quest Diagnostics Introduces AI Companion to Help ...

2026-05-25

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 4

Properties that don't map to a standard resource type

Healthcare Professionals

Healthcare Professionals

Business Solutions

Business Solutions

MyQuest

MyQuest

Quest Health

Quest Health

Source (apis.yml)

aid: quest-diagnostics
name: Quest Diagnostics
description: Quest Diagnostics is a Fortune 500 company and the world's leading provider of diagnostic information services
  that patients and doctors can rely on to make better healthcare decisions. Quest operates 2,000+ patient service centers,
  performs 200+ million tests annually, and supplies its Quanum family of solutions for connecting laboratories, EHR systems,
  and health plans.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: enterprise
  onboarding: approval
  trial: false
  try_now: false
  public: false
  label: Enterprise · Requires approval
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/quest-diagnostics.png
tags:
- Diagnostics
- Fortune 500
- Healthcare
- Laboratory
- Lab Services
url: https://raw.githubusercontent.com/api-evangelist/quest-diagnostics/refs/heads/main/apis.yml
created: '2026-03-21'
modified: '2026-04-28'
specificationVersion: '0.23'
apis:
- aid: quest-diagnostics:quanum-data-exchange
  name: Quanum Data Exchange
  description: Quanum Data Exchange is Quest's interoperability service for delivering laboratory and diagnostic results into
    electronic health record systems, enabling integrated ordering and resulting workflows across healthcare organizations.
  humanURL: https://www.questdiagnostics.com/business-solutions/health-systems-it-solutions
  tags:
  - Healthcare
  - Lab Results
  - Interoperability
  - EHR
  properties:
  - type: Documentation
    url: https://www.questdiagnostics.com/business-solutions/health-systems-it-solutions
- aid: quest-diagnostics:quanum-elabs
  name: Quanum eLabs
  description: Quanum eLabs is a web-based laboratory ordering and results delivery service that integrates with provider
    workflows so clinicians can submit orders, track samples, and review Quest results electronically.
  humanURL: https://www.questdiagnostics.com/healthcare-professionals/about-our-tests/quanum-elabs
  tags:
  - Healthcare
  - Lab Orders
  - Lab Results
  properties:
  - type: Documentation
    url: https://www.questdiagnostics.com/healthcare-professionals/about-our-tests/quanum-elabs
common:
- type: DomainSecurity
  url: security/quest-diagnostics-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/quest-diagnostics
- type: Website
  url: https://www.questdiagnostics.com
- type: Healthcare Professionals
  url: https://www.questdiagnostics.com/healthcare-professionals
- type: Business Solutions
  url: https://www.questdiagnostics.com/business-solutions
- type: MyQuest
  url: https://myquest.questdiagnostics.com/
- type: Quest Health
  url: https://www.questhealth.com/
- url: https://newsroom.questdiagnostics.com/
  type: Blog
maintainers:
- FN: API Evangelist
  email: info@apievangelist.com

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