Financial research concept

Diagnostic Lab Organic Requisition Volume Growth

measures year-over-year requisition growth excluding acquisition-related contribution under the issuer's organic-volume methodology.

By Lee BaileyPublished Sep 25, 2026

Research context

See what supports this page, how current it is, and where comparable or historical context is available.

Research date: Sep 25, 2026Use the dated article and cited sources for the definition, examples, and stated limitations.
Operating-model context: 17 connected conceptsPart of the reviewed Diagnostic Laboratory Economics; issuer definitions remain distinct where disclosed.
Company examples: 1 reviewed companyRelationships reflect supported examples, not a normalized cross-company KPI ranking.

Organic growth was 8.9 points below reported requisition growth
Organic growth represented about 27.6% of the reported growth rate
Organic growth is issuer-defined
Part of the Diagnostic Laboratory Economics
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Diagnostic Lab Organic Requisition Volume Growth measures requisition growth excluding acquisition-related contribution under Quest Diagnostics' methodology.

Quest Diagnostics reported 3.4% organic requisition-volume growth in 2025.

Organic growth was 8.9 points below reported requisition growth

Reported requisition-volume growth was 12.3%.

The difference was 8.9 percentage points, showing that acquired volume and other scope effects drove most of the gap between reported and organic growth.

Organic growth represented about 27.6% of the reported growth rate

Dividing 3.4% by 12.3% gives roughly 27.6%.

That ratio is only a scale comparison, not a decomposition of incremental requisitions.

Use Diagnostic Lab Requisition Volume Growth to keep the reported-growth denominator visible.

Organic growth is issuer-defined

Quest's exclusion methodology is not necessarily comparable with same-store, constant-currency, or organic definitions used by other healthcare companies.

Primary source: Quest Diagnostics 2025 Form 10-K.

Part of the Diagnostic Laboratory Economics

Connect requisition growth and monetization, test and customer-channel mix, and the collection, connectivity, payer-access, and logistics network that supports a large diagnostic laboratory platform.

Browse the full operating model in Company Analysis →

Where this concept fits

Requisition growth and monetizationCurrent relationship
Test requisition volume is the core activity base, reported and organic requisition growth separate acquisition-driven from underlying volume changes, and revenue per requisition shows monetization across price, payer mix, business mix, test mix, and tests per requisition. Core diagnostic information services and diagnostic solutions revenue keep the two business groups distinct.
Diagnostic Information Services RevenueDiagnostic Lab Organic Requisition Volume GrowthCurrent conceptDiagnostic Lab Requisition Volume Growth Diagnostic Lab Revenue per Requisition Change Diagnostic Lab Test Requisition Volume Diagnostic Solutions Revenue
Test complexity and customer-channel mix
Gene-based and esoteric testing plus anatomic pathology show important testing-complexity mix, while physician, hospital, and other diagnostic-information-services revenue shares show where demand originates. Test mix and customer channel are separate dimensions of the revenue model.
Diagnostic Lab Anatomic Pathology Revenue Mix Diagnostic Lab Gene-Based and Esoteric Testing Revenue Mix Diagnostic Lab Hospital Channel Revenue Mix Diagnostic Lab Other Information Services Revenue Mix Diagnostic Lab Physician Channel Revenue Mix
Access, connectivity, and logistics network
Patient access points and service centers describe specimen-collection reach, connected clinician and hospital accounts plus insured-lives access describe ordering and payer-network reach, and daily logistics stops plus courier vehicles show the physical transport infrastructure connecting collection sites to laboratories.
Diagnostic Lab Connected Clinician and Hospital Accounts Diagnostic Lab Courier Vehicle Count Diagnostic Lab Daily Logistics Stop Count Diagnostic Lab Insured Lives Access Diagnostic Lab Patient Access Point Count Diagnostic Lab Patient Service Center Count

See It in Company Research

These companies are examples of how the concept is reported or discussed in public filings. Definitions can differ by issuer; these links open company research rather than a normalized metric comparison.

DGXOpen operating-model research →17 of 17 reviewed concepts in Diagnostic Laboratory EconomicsRequisition growth and monetization6 of 6 bridge concepts supportedContinue through this bridge:Diagnostic Information Services Revenue Diagnostic Lab Requisition Volume Growth Diagnostic Lab Revenue per Requisition Change Diagnostic Lab Test Requisition Volume Diagnostic Solutions Revenue

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Compare public companies

Compare organic requisition growth with the much faster reported growth that includes acquisitions.

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