POWER OF ATTORNEY
KNOWN ALL MEN BY THESE PRESENTS, that the undersigned
hereby constitutes and appoints Bradford T. Smith his true and
lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any
and all capacities, in connection with the Laboratory
Corporation of America Holdings (the "Corporation") Annual
Report on Form 10-K for the year ended December 31, 2003 under
the Securities Exchange Act of 1934, as amended, including,
without limiting the generality of the foregoing, to sign the
Form 10-K in the name and on behalf of the Corporation or on
behalf of the undersigned as a director or officer of the
Corporation, and any amendments to the Form 10-K and any
instrument, contract, document or other writing, of or in
connection with the Form 10-K or amendments thereto, and to file
the same, with all exhibits thereto, and other documents in
connection therewith, including this power of attorney, with the
Securities and Exchange Commission and any applicable securities
exchange or securities self-regulatory body, granting unto said
attorneys-in-fact and agents, each acting alone, full power and
authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as
fully to all intents and purposes as he might or could do in
person, hereby ratifying and confirming all that said attorney-
in-fact and agents, each acting alone, or his substitute or
substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has signed these
presents this 10th day of March, 2004.
By: /s/ JEAN-LUC BELINGARD
---------------------------
Jean-Luc Belingard
POWER OF ATTORNEY
KNOWN ALL MEN BY THESE PRESENTS, that the undersigned
hereby constitutes and appoints Bradford T. Smith his true and
lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any
and all capacities, in connection with the Laboratory
Corporation of America Holdings (the "Corporation") Annual
Report on Form 10-K for the year ended December 31, 2003 under
the Securities Exchange Act of 1934, as amended, including,
without limiting the generality of the foregoing, to sign the
Form 10-K in the name and on behalf of the Corporation or on
behalf of the undersigned as a director or officer of the
Corporation, and any amendments to the Form 10-K and any
instrument, contract, document or other writing, of or in
connection with the Form 10-K or amendments thereto, and to file
the same, with all exhibits thereto, and other documents in
connection therewith, including this power of attorney, with the
Securities and Exchange Commission and any applicable securities
exchange or securities self-regulatory body, granting unto said
attorneys-in-fact and agents, each acting alone, full power and
authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as
fully to all intents and purposes as he might or could do in
person, hereby ratifying and confirming all that said attorney-
in-fact and agents, each acting alone, or his substitute or
substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has signed these
presents this 10th day of March, 2004.
By:/s/ Wendy E. Lane
-----------------------
Wendy E. Lane
POWER OF ATTORNEY
KNOWN ALL MEN BY THESE PRESENTS, that the undersigned
hereby constitutes and appoints Bradford T. Smith his true and
lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any
and all capacities, in connection with the Laboratory
Corporation of America Holdings (the "Corporation") Annual
Report on Form 10-K for the year ended December 31, 2003 under
the Securities Exchange Act of 1934, as amended, including,
without limiting the generality of the foregoing, to sign the
Form 10-K in the name and on behalf of the Corporation or on
behalf of the undersigned as a director or officer of the
Corporation, and any amendments to the Form 10-K and any
instrument, contract, document or other writing, of or in
connection with the Form 10-K or amendments thereto, and to file
the same, with all exhibits thereto, and other documents in
connection therewith, including this power of attorney, with the
Securities and Exchange Commission and any applicable securities
exchange or securities self-regulatory body, granting unto said
attorneys-in-fact and agents, each acting alone, full power and
authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as
fully to all intents and purposes as he might or could do in
person, hereby ratifying and confirming all that said attorney-
in-fact and agents, each acting alone, or his substitute or
substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has signed these
presents this 10th day of March, 2004.
By:/s/Robert E. Mittelstaedt
-----------------------------
Robert E. Mittelstaedt
POWER OF ATTORNEY
KNOWN ALL MEN BY THESE PRESENTS, that the undersigned
hereby constitutes and appoints Bradford T. Smith his true and
lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any
and all capacities, in connection with the Laboratory
Corporation of America Holdings (the "Corporation") Annual
Report on Form 10-K for the year ended December 31, 2003 under
the Securities Exchange Act of 1934, as amended, including,
without limiting the generality of the foregoing, to sign the
Form 10-K in the name and on behalf of the Corporation or on
behalf of the undersigned as a director or officer of the
Corporation, and any amendments to the Form 10-K and any
instrument, contract, document or other writing, of or in
connection with the Form 10-K or amendments thereto, and to file
the same, with all exhibits thereto, and other documents in
connection therewith, including this power of attorney, with the
Securities and Exchange Commission and any applicable securities
exchange or securities self-regulatory body, granting unto said
attorneys-in-fact and agents, each acting alone, full power and
authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as
fully to all intents and purposes as he might or could do in
person, hereby ratifying and confirming all that said attorney-
in-fact and agents, each acting alone, or his substitute or
substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has signed these
presents this 10th day of March, 2004.
By:/s/James B. Powell
-------------------------
James B. Powell
POWER OF ATTORNEY
KNOWN ALL MEN BY THESE PRESENTS, that the undersigned
hereby constitutes and appoints Bradford T. Smith his true and
lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any
and all capacities, in connection with the Laboratory
Corporation of America Holdings (the "Corporation") Annual
Report on Form 10-K for the year ended December 31, 2003 under
the Securities Exchange Act of 1934, as amended, including,
without limiting the generality of the foregoing, to sign the
Form 10-K in the name and on behalf of the Corporation or on
behalf of the undersigned as a director or officer of the
Corporation, and any amendments to the Form 10-K and any
instrument, contract, document or other writing, of or in
connection with the Form 10-K or amendments thereto, and to file
the same, with all exhibits thereto, and other documents in
connection therewith, including this power of attorney, with the
Securities and Exchange Commission and any applicable securities
exchange or securities self-regulatory body, granting unto said
attorneys-in-fact and agents, each acting alone, full power and
authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as
fully to all intents and purposes as he might or could do in
person, hereby ratifying and confirming all that said attorney-
in-fact and agents, each acting alone, or his substitute or
substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has signed these
presents this 10th day of March, 2004.
By:/s/Andrew G. Wallace
----------------------------
Andrew G. Wallace
POWER OF ATTORNEY
KNOWN ALL MEN BY THESE PRESENTS, that the undersigned
hereby constitutes and appoints Bradford T. Smith his true and
lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any
and all capacities, in connection with the Laboratory
Corporation of America Holdings (the "Corporation") Annual
Report on Form 10-K for the year ended December 31, 2003 under
the Securities Exchange Act of 1934, as amended, including,
without limiting the generality of the foregoing, to sign the
Form 10-K in the name and on behalf of the Corporation or on
behalf of the undersigned as a director or officer of the
Corporation, and any amendments to the Form 10-K and any
instrument, contract, document or other writing, of or in
connection with the Form 10-K or amendments thereto, and to file
the same, with all exhibits thereto, and other documents in
connection therewith, including this power of attorney, with the
Securities and Exchange Commission and any applicable securities
exchange or securities self-regulatory body, granting unto said
attorneys-in-fact and agents, each acting alone, full power and
authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as
fully to all intents and purposes as he might or could do in
person, hereby ratifying and confirming all that said attorney-
in-fact and agents, each acting alone, or his substitute or
substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has signed these
presents this 10th day of March, 2004.
By:/s/M. Keith Weikel
-------------------------
M. Keith Weikel