Company · Healthcare Services

Quest Diagnostics Incorporated

Federal civil lawsuits naming Quest Diagnostics Incorporated, a Healthcare Services company.

Ticker: NYSE: DGX
Business: Services-Medical Laboratories
Headquarters: Secaucus, NJ
Incorporated in: Delaware
SEC CIK: 1022079

Quest Diagnostics Incorporated is a public company in Services-Medical Laboratories, based in Secaucus, NJ (traded on NYSE as DGX, incorporated in Delaware). It appears in 345 federal civil lawsuits in this index, most often as a defendant (318 of 345). These cases are most often Civil Rights and Labor matters, filed between 1996 and 2026, most frequently in District Court, D. New Jersey. The most common causes of action are Fraud, Employment, and Breach of Contract. Frequent opposing parties include Thomas, Smith, and Jones.

345

Lawsuits

318

As Defendant

As Plaintiff

Open

326

Terminated

1996–2026

Span

9 mo

Median Duration

11 cases/yrNamed as defendant in 92% of cases44% Civil RightsRecent filings down

Cases by State

AK · 2

Open Cases Over Time

1996peak 32 open2026

Case Types Over Time

19962026

Civil RightsLaborContractPersonal Property / FraudFederal Tax / Statutory Actions

Filings by Year

19962026

Case Types filter →

Civil Rights151

Labor58

Contract47

Personal Property / Fraud36

Federal Tax / Statutory Actions18

RICO / Consumer / Other Statutes12

Where Filed filter →

Frequent Opposing Parties

345 Cases — Newest First

Lee v. Quest Diagnostics Incorporated

Civil Rights Terminated District Court, N.D. CaliforniaNo. 3:03-cv-03164Filed 07/08/2003
State of California v. Quest Diagnostics

Antitrust Terminated District Court, C.D. CaliforniaNo. 2:03-cv-01385Filed 02/27/2003
Edwards v. Quest Diagnostics

Civil Rights Terminated District Court, D. MarylandNo. 1:03-cv-00324Filed 01/31/2003
Passauer v. Quest Diagnostics

Contract Terminated District Court, D. MarylandNo. 1:03-cv-00159Filed 01/17/2003
Rosie Sifuentes v. Quest Diagnostics Incorporated

Civil Rights Terminated District Court, D. NevadaNo. 3:02-cv-00623Filed 11/25/2002
Montag v. Quest Diagnostics

Civil Rights Terminated District Court, N.D. IllinoisNo. 1:02-cv-05883Filed 08/16/2002
Osha v. Quest Diagnostics

Other Civil Terminated District Court, D. ColoradoNo. 1:02-mc-00037Filed 08/08/2002
Boyd v. Quest Diagnostics

Civil Rights Terminated District Court, N.D. IllinoisNo. 1:02-cv-05037Filed 07/16/2002
Cole v. Quest Diagnostics Clinical Laboratories, Inc

Product Liability Terminated District Court, N.D. OhioNo. 1:02-cv-00927Filed 05/16/2002
Quest Diagnostics in v. Glaxosmithkline PLC

Contract Terminated District Court, D. New JerseyNo. 2:02-cv-02115Filed 05/02/2002
Access Now, Inc v. Quest Diagnostics

Civil Rights Terminated District Court, S.D. FloridaNo. 0:02-cv-60532Filed 04/16/2002
Freeman v. Quest Diagnostics

Civil Rights Terminated District Court, E.D. PennsylvaniaNo. 2:02-cv-01211Filed 03/08/2002
Crawford v. Quest Diagnostics

Contract Terminated District Court, S.D. New YorkNo. 1:02-cv-01760Filed 03/05/2002
Hogan v. Quest Diagnostics

Contract Terminated District Court, S.D. TexasNo. 4:02-cv-00322Filed 01/29/2002
McAbee v. Quest Diagnostics

Civil Rights Terminated District Court, S.D. FloridaNo. 1:01-cv-04185Filed 10/09/2001
Caresoft, Inc v. Quest Diagnostics Incorporated

Contract Terminated District Court, N.D. CaliforniaNo. 5:01-cv-20920Filed 09/28/2001
Gaby Goubran v. Quest Diagnostics

Contract Terminated District Court, C.D. CaliforniaNo. 2:01-cv-04747Filed 05/25/2001
Ryles v. Quest Diagnostics

Civil Rights Terminated District Court, N.D. FloridaNo. 4:01-cv-00037Filed 01/25/2001
Sojdehei v. Quest Diagnostics

Civil Rights Terminated District Court, D. MarylandNo. 8:01-cv-00080Filed 01/11/2001
ProPath Services LLP v. Quest Diagnostics

Contract Terminated District Court, N.D. TexasNo. 3:00-cv-02391Filed 10/31/2000
Clark v. Quest Diagnostics

Civil Rights Terminated District Court, D. MassachusettsNo. 1:00-cv-12200Filed 10/23/2000
Smith v. Quest Diagnostics

Civil Rights Terminated District Court, S.D. CaliforniaNo. 3:00-cv-01909Filed 09/22/2000
Richards v. Quest Diagnostics

Civil Rights Terminated District Court, D. NebraskaNo. 4:00-cv-03139Filed 05/30/2000
Shahidi v. Quest Diagnostics

Civil Rights Terminated District Court, S.D. CaliforniaNo. 3:00-cv-00715Filed 04/07/2000
Gaunt v. Quest Diagnostics

Federal Tax / Statutory Actions Terminated District Court, D. MassachusettsNo. 4:00-cv-40051Filed 03/23/2000
Weidner v. Quest Diagnostics, Inc

Real Property Terminated District Court, D. AlaskaNo. 1:00-cv-00008Filed 02/10/2000
Quest Diagnostics in v. Smith

Contract Terminated District Court, D. New JerseyNo. 2:00-cv-00254Filed 01/18/2000
Bio-Reference Labora v. Quest Diagnostics in, Et Al

Federal Tax / Statutory Actions Terminated District Court, D. New JerseyFiled 11/24/1999
Dubil v. Quest Diagnostics

Labor Terminated District Court, W.D. New YorkNo. 1:99-cv-00788Filed 10/13/1999
Clemons v. Quest Diagnostics

Contract Terminated District Court, N.D. IllinoisNo. 1:99-cv-06122Filed 09/16/1999
Judd v. Quest Diagnostics

Civil Rights Terminated District Court, D. MarylandNo. 1:99-cv-02601Filed 08/25/1999
Mcelhinney v. Quest Diagnostics

Civil Rights Terminated District Court, E.D. PennsylvaniaNo. 2:99-cv-02109Filed 04/26/1999
Barrio v. Quest Diagnostics

Contract Terminated District Court, W.D. WashingtonNo. 2:99-cv-00634Filed 04/23/1999
Amgic R&D LP 1983 v. Quest Diagnostics

Contract Terminated District Court, D. ColoradoNo. 1:99-cv-00338Filed 02/22/1999
Gonzalez v. Quest Diagnostics

Labor Terminated District Court, N.D. FloridaNo. 1:98-cv-00199Filed 12/15/1998
Stuart v. Quest Diagnostics In

Labor Terminated District Court, E.D. VirginiaNo. 1:98-cv-01416Filed 09/29/1998
United States of America $ v. Quest Diagnostics Inc

Federal Tax / Statutory Actions Terminated District Court, S.D. IndianaNo. 1:98-cv-00038Filed 01/12/1998
Clausen v. Quest Diagnostics

Personal Property / Fraud Terminated District Court, N.D. GeorgiaNo. 1:97-cv-03346Filed 11/05/1997
Hudson v. Quest Diagnostics

Civil Rights Terminated District Court, N.D. GeorgiaNo. 1:97-cv-03104Filed 10/10/1997
USA, Et Al v. Quest Diagnostics

Federal Tax / Statutory Actions Terminated District Court, D. MarylandFiled 08/04/1997
Eeoc v. Quest Diagnostics

Civil Rights Terminated District Court, E.D. MichiganNo. 2:97-cv-72016Filed 04/30/1997
Murphy v. Quest Diagnostics

Civil Rights Terminated District Court, N.D. GeorgiaNo. 1:97-cv-01207Filed 04/29/1997
Young v. Quest Diagnostics

Labor Terminated District Court, E.D. MissouriNo. 4:97-cv-00558Filed 03/31/1997
USA, Et Al v. Quest Diagnostics, Et Al

Contract Terminated District Court, D. MassachusettsFiled 02/21/1997
Dorer v. Quest Diagnostics

Civil Rights Terminated District Court, D. MarylandNo. 1:96-cv-03957Filed 12/24/1996

Showing 301–345 of 345