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                                                                      EXHIBIT 14

                             CODE OF BUSINESS ETHICS

                         "Integrity is the Bottom Line."

This Code of Business Ethics describes the standards of business conduct
required of all Quest Diagnostics employees, executive officers and directors.
This Code reflects our Company's Vision and Values. No code of conduct can
replace the thoughtful behavior of an ethical director, executive officer or
employee, but this Code serves to help us focus on key areas of ethical risk,
provide guidance on appropriate behavior, and continue to foster the culture of
honesty and accountability which is evident throughout Quest Diagnostics.

Each employee, executive officer and director has a personal responsibility to
ensure that his or her actions abide by the letter and the spirit of this Code.
Management must instill a culture in which compliance with the Company's
policies and all applicable laws is at the core of all the Company's business
activities.

The policies set forth in this Code are supported by the specific and detailed
policies and practices contained in the Company's Employee Handbook, Integrity
Commitment, Compliance Policy Handbook and Standard Operating Procedures (SOPs).

                                 KEY PRINCIPLES

CONFIDENTIALITY         Quest Diagnostics employees, executive officers and
                        directors must respect and maintain the confidentiality
                        of confidential information regarding the Company, its
                        services, customers and patients.

                        Directors, executive officers and employees must
                        maintain the confidentiality of information entrusted to
                        them by the Company, customers or patients of the
                        Company, except when disclosure is authorized or legally
                        permitted or mandated. Confidential information includes
                        all non-public information that might be of use to
                        competitors, or harmful to the Company or its customers,
                        if disclosed. Equally important is safeguarding the
                        confidentiality of the personal information entrusted to
                        us by patients. The obligation to safeguard confidential
                        information continues after employment or board service
                        with the Company ends.

CONFLICTS OF INTEREST   Quest Diagnostics employees, executive officers and
                        directors must avoid conflicts of interests.

                        A "conflict of interest" exists when a person's private
                        interest interferes in any way, or even appears to
                        interfere, with the


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                        interests of the Company. A conflict situation can arise
                        when an employee, executive officer or director takes
                        actions or has personal, financial or other interests
                        that may interfere with his or her ability to perform
                        any of his or her work for the Company objectively and
                        effectively. Conflicts of interest also arise when an
                        employee, executive officer or director, or a member of
                        his or her family, receives improper personal benefits
                        as a result of his or her position in the Company.
                        However, because it is impossible to describe every
                        potential conflict of interest, Quest Diagnostics relies
                        on the commitment of its directors, executive officers
                        and employees to exercise good judgment, to seek advice
                        when appropriate and to adhere to high ethical standards
                        in the conduct of their professional and personal
                        affairs.

                        Employees, executive officers and directors are required
                        to disclose to the person(s) designated by Quest
                        Diagnostics or as set forth in the Corporate Governance
                        Guidelines all relevant facts about any personal
                        relationship or transaction that constitutes a potential
                        conflict of interest. However, disclosure of any such
                        relationship or transaction will not necessarily
                        constitute a violation of the conflict of interest
                        provisions of the Code. Rather, the Company's policy
                        requires disclosure and review of potential conflicts of
                        interests and prohibition of actual conflicts of
                        interests.

                        If it is determined that a disclosed relationship or
                        transaction does not constitute an actual conflict of
                        interest, no further action will be required. If it is
                        determined that an actual conflict of interest may
                        exist, then additional actions or protections may be
                        required in order to avoid a conflict of interest or to
                        remedy one. Disclosed relationships or transactions that
                        constitute actual conflicts of interest that cannot be
                        avoided or remedied are prohibited.

                        Any determination that a disclosed relationship or
                        transaction does not constitute an actual conflict of
                        interest will not be considered a waiver of the conflict
                        of interest provisions of the Code.

                        Any employee, executive officer or director that becomes
                        aware of any activity, financial interest or
                        relationship that involves another employee, executive
                        officer or director and that may constitute a potential
                        conflict of interest must report the potential conflict
                        of interest as described herein under the heading "Duty
                        to Report".


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CORPORATE               Quest Diagnostics employees, executive officers and
OPPORTUNITIES           directors may not use corporate property, information or
                        position for personal gain.

                        Employees, executive officers and directors are
                        prohibited from competing with Quest Diagnostics and owe
                        a duty to the Company to advance the Company's interest
                        to the best of their abilities. Employees, executive
                        officers and directors who are aware of an opportunity
                        that is generally in the scope of the Company's business
                        must present that opportunity to the Company.

PROTECTION OF           Quest Diagnostics employees, executive officers and
COMPANY ASSETS          directors must protect the Company's assets and ensure
                        they are used only for legitimate business purposes.

                        Theft, carelessness and waste have a direct impact on
                        the Company's profitability. Employees, executive
                        officers and directors are responsible for ensuring that
                        the Company's assets are utilized efficiently and
                        appropriately.


FAIR DEALING            Quest Diagnostics employees, executive officers and
                        directors must deal fairly with other employees,
                        customers, patients, vendors and competitors.

                        No person may take unfair advantage of anyone through
                        manipulation, concealment, abuse or privileged or
                        confidential information, misrepresentation of facts or
                        any other unfair-dealing practice.


COMPLIANCE WITH LAWS,   Quest Diagnostics employees, executive officers and
RULES AND REGULATIONS   directors must abide by all applicable laws, rules and
                        regulations.

                        The Company actively promotes compliance with all laws,
                        rules and regulations, including insider-trading laws.
                        Employees must comply with the applicable laws of the
                        country in which they operate. Noncompliance is
                        unethical, illegal and in conflict with the Company's
                        values and commitment to integrity. Violations will be
                        dealt with decisively.


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FAIR AND TIMELY        The Company's Chief Executive Officer and senior
DISCLOSURE IN          financial officers are responsible for ensuring that the
PUBLIC REPORTING       Company's financial statements, public reports and
AND COMMUNICATIONS     communications contain disclosure that is full, fair,
                       accurate, timely and understandable.

                       The Company's Chief Executive Officer and senior
                       financial officers, together with certain other
                       employees designated by the Chief Financial Officer, are
                       responsible for establishing and maintaining effective
                       disclosure controls and procedures and internal controls
                       and procedures for financial reporting. Every employee
                       who is aware of any potential inaccuracy in the
                       Company's disclosures must report the potential
                       inaccuracy as described herein under the heading "Duty
                       to Report".

DUTY TO REPORT         Quest Diagnostics employees, executive officers and
                       directors who have knowledge that an applicable law,
                       regulation, policy or ethical guideline has been, or may
                       be, violated must promptly report such information to an
                       appropriate person within the Company.

                       The Company actively promotes honest and ethical
                       behavior in all its business activities. The Company has
                       an "open-door" policy and employees are encouraged to
                       report potential violations to their supervisors, any
                       member of management, a Compliance Officer, the Legal
                       and Compliance Department, the Human Resources
                       Department, the local or Corporate Compliance Team or
                       through the Company Hotline (CHEQline). Employees are
                       also encouraged to speak to their supervisors or other
                       appropriate personnel, including the Legal and
                       Compliance Department, at any time if there is any doubt
                       about the best course of action in a particular
                       situation. No employee will suffer any penalty or
                       retribution for reporting suspected misconduct or
                       noncompliance or will be subject to adverse consequences
                       as a result of making the report.

                       Potential violations of this Code may also be reported to
                       the Board of Directors through the Company's web site:
                       www.questdiagnostics.com.


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o        Violations of this Code

The values and principles set forth in this Code are critically important to the
Company and must be taken seriously by all of us. Accordingly, violations will
lead to disciplinary action in accordance with the Company's policies. Such
disciplinary action may include reprimand, reimbursement of any loss or damage
suffered by the Company or termination of employment. Under certain
circumstances, violation of this Code may also result in referral for civil
action or criminal prosecution, or any other disciplinary action deemed
appropriate by the Company.

o        Waivers of this Code

Any waiver of this Code for executive officers, senior financial officers or
directors may be made only by the Board of Directors or a Board Committee and
must be disclosed to shareholders as required by applicable law or stock
exchange regulations.


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