When was Quest Diagnostics founded?

Quest Diagnostics was founded in 1967 and raised its 1st funding round 42 years after it was founded.

Where is Quest Diagnostics located?

Quest Diagnostics is headquartered in Secaucus, United States.

Who is the current CEO of Quest Diagnostics?

James Davis of Quest Diagnostics.

How many employees does Quest Diagnostics have?

As of Jun 30, 2026, the latest employee count at Quest Diagnostics is 32677.

Is Quest Diagnostics a funded company?

Quest Diagnostics is a funded company, having raised an undisclosed amount across 3 funding rounds to date. The company's 1st funding round was a $***** Grant (prize money) round, raised on Apr 03, 2009.

When was the latest funding round of Quest Diagnostics?

Quest Diagnostics' latest funding was a $***** Conventional Debt round on May 02, 2019, with participation from 0 investor.

What is the annual revenue of Quest Diagnostics?

Annual revenue of Quest Diagnostics is more than $1B as on Dec 31, 2025

Where does Quest Diagnostics rank among its competitors?

Quest Diagnostics ranks 1st amongst 65 active competitors, of which 8 are funded. It stands 8th in terms of total funding among its competitors. The most recent competitor to raise funding was My One Medical Source, which secured $4.64M in Mar, 2025.

Who are the top competitors of Quest Diagnostics?

Quest Diagnostics' top competitors include Healthians, Hindustan Wellness and 1mg Labs. Among them, My One Medical Source secured the most recent funding round in March, 2025.

Quest Diagnostics - 2026 Company Profile, Team, Funding, Competitors & Financials

Quest Diagnostics is a public company based in Secaucus (United States), founded in 1967. It operates as a Provider of integrated diagnostic and IT products and services for healthcare organizations. Quest Diagnostics has raised an undisclosed amount in funding. The company has 65 active competitors, including 8 funded and 2 that have exited. Its top competitors include companies like Healthians, Hindustan Wellness and 1mg Labs.

Company Details

Provider of integrated diagnostic and IT products and services for healthcare organizations. The company offers physicians a broad test menu, is one of the leaders in cancer diagnostics and provides anatomic pathology services, and interpretive consultation through its medical and scientific staff.

Website: www.questdiagnostics.com/
Social
Email ID: *****@questdiagnostics.com
Phone Number: +1 **********

Key Metrics

Founded Year

1967

Location

Secaucus, United States

Stage

Public

Latest Funding Round

Conventional Debt, May 02, 2019, $*****

Investors

National Science Foundation

Ranked

1^st among 65 active competitors

Annual Revenue

$1B+ as on Dec 31, 2025

Employee Count

32,677 as on Jun 30, 2026

Investment & Acquisitions

PreciseDx & 23 more

Similar Companies

Labi Exams & 52 more

Exit Details

Public

View Quest Diagnostics' full profile

Quest Diagnostics is associated with 8 legal entities given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
QUEST DIAGNOSTICS INC CIN: 1022079 , United States, Active	Dec 11, 1990	$1B+ (As on Dec 31, 2025)	48000 (As on Dec 31, 2023)	-
QUEST DIAGNOSTICS HTAS INDIA PRIVATE LIMITED CIN: U93090TG2017PTC132323 , India, Active	Sep 22, 2017	₹50 - ₹100 Cr (As on Mar 31, 2025)	311 (As on Aug 01, 2025)
QUEST DIAGNOSTICS INCORPORATED CIN: 161387862 , United States, Active	Dec 31, 1999	-	48197 (As on Dec 31, 2020)	-
QTEST DIAGNOSTICS LLP CIN: AAX-2016 , India, Active	May 31, 2021	0 - ₹10 Cr (As on Mar 31, 2023)	-
QUEST DIAGNOSTICS INDIA PRIVATE LIMITED CIN: U85121HR2006PTC041582 , India, Active	Sep 14, 2006	0 - ₹10 Cr (As on Mar 31, 2025)	2 (As on Jan 31, 2025)
Quest Diagnostics Incorporated CIN: 16-1387862 , United States, Active	Dec 11, 1990	-	2065 (As on Dec 31, 2015)	-
QUEST CONSUMER INC. CIN: 32089454188 , United States, Active		-	-	-
Quest Laboratories Limited CIN: U24232MP1998PLC012850 , India, Active	Jun 01, 1998	₹100 - ₹500 Cr (As on Mar 31, 2025)	-

Quest Diagnostics got listed on Dec 17, 1996.

Click here to take a look at Quest Diagnostics's IPO in detail

Quest Diagnostics has raised funding over 3 rounds. Its first funding round was on Apr 03, 2009. Quest Diagnostics has 1 institutional investor.

Here is the list of recent funding rounds of Quest Diagnostics:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
May 02, 2019	3756186	Conventional Debt	5724284	3154220	5974120	4166415
Mar 2015	1968762	Conventional Debt	6282889	2425248	3623968	6994928
Apr 03, 2009	3004633	Grant (prize money)	6542902	6281362	2296421	National Science Foundation

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Quest Diagnostics' employee count trend

Quest Diagnostics has 32,677 employees as of Jun 26. Here is Quest Diagnostics's employee count trend over the years:

Employee count trend for Quest Diagnostics

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Top competitors of Quest Diagnostics include Healthians, Hindustan Wellness and 1mg Labs. Here is the list of Top 10 competitors of Quest Diagnostics, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Quest Diagnostics 1967, Secaucus (United States), Public	Provider of integrated diagnostic and IT products and services for healthcare organizations	-	National Science Foundation	73/100
2nd	Healthians 2013, Gurugram (India), Series C	Online platform for at home diagnostic tests and health checkups	$80.1M	Beenext, WestBridge Capital & 62 others	70/100
3rd	Hindustan Wellness 2014, Gurugram (India), Seed	Mobile app for booking preventive health checkups and maintaining personal health records	$3.4M	Prime Securities, Caspian Debt & 44 others	48/100
4th	1mg Labs 2015, Delhi (India), Unfunded	Online marketplace for diagnostic test and health package	-	-	48/100
5th	My One Medical Source 2020, Cleveland (United States), Series A	Platform connecting patients and providers for booking diagnostic and clinical testing	$5.74M	Jumpstart Ventures	45/100
6th	Health Meter 2011, Mumbai (India), Unfunded	Mobile app to book lab tests and store medical records	-	-	42/100
7th	WellnessFX 2010, San Francisco (United States), Acquired	Personalized health insights through at-home tests and tailored wellness plans	$5.85M	Javelin Venture Partners, Floodgate & 3 others	41/100
8th	Fitnescity 2014, New York City (United States), Seed	Network connecting individuals to wellness testing with digital results platform	$120K	Techstars, Evolution VC Partners & 3 others	37/100
9th	Reliant 2017, Austin (United States), Series A	Online platform for AI enabled diagnostics	$4.05M	Dreamit	37/100
10th	LabsAdvisor 2015, Delhi (India), Seed	Online marketplace for diagnostic labs	$351K	Axience & 27 others	34/100

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Quest Diagnostics has made 9 investments in companies including PreciseDx and UDX. Quest Diagnostics has also acquired 15 companies including Haystack Oncology and Labtech Diagnostics.

Here is the list of investments & acquisitions:

Filter this list

Date of Investment/Acquisition	Type	Company Name	Founded Year	Location
May 28, 2025	Investments	PreciseDx	2019	New York City (United States)
Aug 16, 2024	Investments	UDX	2012	Seville (Spain)
Feb 20, 2024	Investments	PreciseDx	2019	New York City (United States)