Diagnostic testing network
Quest Diagnostics Incorporated
Quest earns revenue by providing clinical testing and diagnostic information services to physicians, hospitals, health plans, and government agencies. It spends on laboratory instruments, reagents, and order-to-cash technology, while acquiring regional laboratories and specialized testing assets to expand volume and capabilities.
Business categories Healthcare Providers & Diagnostic Services · Biopharma & Life Sciences · primary
DGX Updated Sep 24, 2026 5 AI consumers· 2 recurring
Per the valuechain.wiki graph, Quest Diagnostics Incorporated is directly linked to 2 companies (1 supply, 1 revenue relationships) and reaches 4 companies within two hops; the links are backed by 7 dated sources, 1 of them primary filings (as of 2026-09-24).
Financials & Segments
- Total revenue · FY2025 net revenues of $11.035 billion
- Segments · Diagnostic Information Services · Diagnostic Solutions
Revenue from
- UnitedHealth Group Incorporated High confidence
UnitedHealth Group's insurance subsidiary, UnitedHealthcare, selected Quest as a full-test-menu provider in its 2026 Preferred Lab Network. Quest's 10-K confirms participation, but revenue attributable to this payer is not disclosed.Confirms EN UnitedHealthcare Published Jun 8, 2026: Preferred Lab Network Frequently Asked Questions - U.S. Centers for Disease Control and Prevention High confidence
The CDC awarded five-year contracts to Quest and other laboratories for data covering more than 200 reportable conditions and surge testing capacity. Quest's 10-K confirms that a CDC preparedness contract supported the launch of its H5 avian influenza test.Confirms EN U.S. Centers for Disease Control and Prevention Published Apr 23, 2025: CDC Streamlines Access to Clinical Laboratory DataMentions KO Korea Health Industry Development Institute Published Nov 28, 2022: Global Healthcare Industry Trends, Vol. 455
Pays to
- Epic Systems Corporation High confidence
Epic supplies technology and services for Project Nova, which consolidates Quest's ordering, results, scheduling, billing, and customer-service systems. The 10-K identifies Epic as a third-party licensor, but the amount payable specifically to Epic is not disclosed.Confirms EN Quest Diagnostics Published Sep 23, 2025: Quest Diagnostics to Improve Laboratory Testing Experience with Industry-First Epic Collaboration - Siemens AG Medium confidence
Siemens Healthineers, part of Siemens, was selected as Quest's preferred immunoassay supplier under a multi-year agreement covering up to 120 Atellica analyzers across 19 U.S. core and esoteric laboratories. Supplier-specific spending was not disclosed.Confirms EN Siemens Healthineers Published Feb 4, 2020: Siemens Healthineers Wins Bid to Become Primary Supplier for Quest Diagnostics Immunoassay Testing
Investments
- Spectra Laboratories, Inc. High confidence· Amount $84M · FY2025 · Cash consideration for acquired Spectra Laboratories clinical and dialysis-water testing assets
Quest acquired clinical testing and dialysis-related water testing assets from Fresenius Medical Care's Spectra Laboratories in 2025. Aggregate cash consideration for the businesses was $84 million.Confirms EN Quest Diagnostics Published Aug 5, 2025: Quest Diagnostics Completes Acquisition of Clinical Testing Assets from Fresenius Medical Care
Value-chain ripple (2 tiers)
Following node-to-node links up to 2 tiers; each firm is shown once, at its nearest tier.
| Company | Chain | '21 | '22 | '23 | '24 | '25 | YTD |
|---|---|---|---|---|---|---|---|
| UnitedHealth Group Incorporated | lead1 | +45.2 | +6.9 | +0.8 | -2.4 | -33.1 | +21.9 |
| Quest Diagnostics Incorporated | node | +47.9 | -7.8 | -10.1 | +11.8 | +17.2 | +38.4 |
| Siemens AG | benef1 | +12.2 | +5.1 | +20.1 | +28 | +26.4 | +8.4 |
| Siemens Energy | benef2 | -35.4 | -2.7 | -27 | +314.2 | +149.9 | +1.8 |
YTD as of 2026-09-04 · source: Yahoo Finance
Quest Diagnostics Incorporated operates across Diagnostic testing network. It is +38.4% in 2026. Demand side (avg +21.9%), the stock (+38.4%) and supply side (avg +8.6%) are moving in step. Propagation has completed a lap, so the next leg depends on individual results more than chain direction. Among connected nodes the furthest ahead is UnitedHealth Group Incorporated (+21.9%) and the furthest behind is Siemens AG (+8.6%). If chain logic explains the gap, the laggard is the next propagation candidate; if not, the link itself deserves a second look. It spends on laboratory instruments, reagents, and order-to-cash technology, while acquiring regional laboratories and specialized testing assets to expand volume and capabilities.
Analysis generated from returns as of 2026-09-04← All companiesMarkdown · JSON · Customers · Suppliers · Ripple