---
schema_version: "secwatch.filing_event.v1"
accession: "0001022079-26-000040"
form_type: "8-K"
ticker: "DGX"
cik: "0001022079"
company_name: "QUEST DIAGNOSTICS INC"
filed_at: "2026-04-21T23:59:59+00:00"
generated_at: "2026-05-15T05:02:34.951480+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Quest Diagnostics Q1 revenue $2.90B (+9.2%), raises FY2026 EPS and revenue guidance

## Summary
- Reported diluted EPS $2.24 (+15.5%); adjusted diluted EPS $2.50 (+13.1%).
- Requisition volume up 10.9% organic; revenue per requisition down 1.3%.
- FY2026 adjusted EPS guidance raised to $10.63-$10.83 from $10.50-$10.70; revenue now $11.78-$11.90B.
- Operating income margin improved to 15.4% adjusted; cash from ops $278M.

## SEC filing metadata
- accession: 0001022079-26-000040
- form_type: 8-K
- ticker: DGX
- cik: 0001022079
- company_name: QUEST DIAGNOSTICS INC
- filed_at: 2026-04-21T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1022079/000102207926000040/0001022079-26-000040-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1022079/000102207926000040/dgx-20260421.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001022079-26-000040
- JSON: https://secwatch.observer/filing/0001022079-26-000040.json
- Plain text: https://secwatch.observer/filing/0001022079-26-000040.txt

## Key facts
- Earnings Releases
  QUEST DIAGNOSTICS INC reported the quarter ended March 31, 2026 results: revenue $2,895, net income $252, EPS $2.24. Guidance raised.
  - Period: the quarter ended March 31, 2026
  - Revenue: $2,895
  - Net income: $252
  - EPS: $2.24
  - Guidance: raised
  - Result: reported results
  source text: implement our first wave of solutions in the fall of 2027. 1 Three Months Ended March 31, 2026 2025 Change (dollars in millions, except per share data) Reported: Net revenues $ 2,895 $ 2,652 9.2 % Diagnostic Information Services revenues $ 2,832 $ 2,589 9.4 % Revenue per requisition (1.3) % Requisition volume 10.9 % Organic requisition volume 10.8 % Operating
  evidence_url: https://www.sec.gov/Archives/edgar/data/1022079/000102207926000040/0001022079-26-000040-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.