UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549

SCHEDULE 13D
(Amendment No. 1)
Under the Securities Exchange Act of 1934

Laboratory Corporation of America

(Name of Issuer)

Common Stock, $0.10 par value per share

(Title of Class of Securities)

50540R409

(CUSIP Number)

Kent Lawson
Longview Asset Management, LLC
222 N. LaSalle St., Suite 2000
Chicago, Illinois 60601
(312) 236-6300

Fredric D. Tannenbaum, Esq.
Gould & Ratner LLP
222 N.  LaSalle Street, Suite 800
Chicago, Illinois 60601
(312) 236-3003

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

March 1, 2007

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G
to report the acquisition that is the subject of this Schedule 13D,
and is filing this schedule because of ss240.13d-1(e), 240.13d-1(f)
or 240.13d-1(g), check the following box.  [   ]

Note: Schedules filed in paper format shall include a signed original
and five copies of the schedule, including all exhibits.  See s240.13d-7
for other parties to whom copies are to be sent.

The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class
of securities, and for any subsequent amendment containing information
which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not
be deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of
that section of the Act but shall be subject to all other provisions
of the Act (however, see the Notes).

CUSIP No.  50540R409	13D	Page 2 of 9

1.  Names of Reporting Persons.  I.R.S.  Identification Nos.  of above
persons (entities only).

Longview Asset Management, LLC / 36-4245844

2.  Check the Appropriate Box if a Member of a Group (See Instructions):

(a)

(b) X

3.  SEC Use Only:

4.  Source of Funds (See Instructions): OO

5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e):

6.  Citizenship or Place of Organization: Delaware

7.  Sole Voting Power: 0

8.  Shared Voting Power: 7,584,731

9.  Sole Dispositive Power: 0

10.  Shared Dispositive Power: 7,584,731

11.  Aggregate Amount Beneficially Owned by Each Reporting Person: 7,584,731

12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares
(See Instructions):

13.  Percent of Class Represented by Amount in Row (11): 6.20%

14.  Type of Reporting Person (See Instructions): IA (Limited Liability Company)

CUSIP No.  50540R409	13D	Page 3 of 9

1.  Names of Reporting Persons.  I.R.S. Identification Nos. of above persons
(entities only).

James A.  Star

2.  Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

(b) X

3.  SEC Use Only

4.  Source of Funds (See Instructions): OO

5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
2(d) or 2(e):

6.  Citizenship or Place of Organization: United States

7.  Sole Voting Power: 0

8.  Shared Voting Power: 7,584,731

9.  Sole Dispositive Power: 0

10.  Shared Dispositive Power: 7,584,731

11.  Aggregate Amount Beneficially Owned by Each Reporting Person: 7,584,731

12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions):

13.  Percent of Class Represented by Amount in Row (11): 6.20%

14.  Type of Reporting Person (See Instructions): IN

CUSIP No.  50540R409	13D	Page 4 of 9

1.  Names of Reporting Persons.  I.R.S. Identification Nos. of above persons
(entities only).

Geoffrey F.  Grossman, not individually but solely as Trustee of the Edward
Memorial Trust

2.  Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

(b) X

3.  SEC Use Only

4.  Source of Funds (See Instructions): OO

5.  Check if Disclosure of Legal Proceedings Is Required Pursuant to Items
 2(d) or 2(e):

6.  Citizenship or Place of Organization: United States

7.  Sole Voting Power: 0

8.  Shared Voting Power: 7,584,731

9.  Sole Dispositive Power: 0

10.  Shared Dispositive Power: 7,584,731

11.  Aggregate Amount Beneficially Owned by Each Reporting Person: 7,584,731

12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares
(See Instructions):

13.  Percent of Class Represented by Amount in Row (11): 6.20%

14.  Type of Reporting Person (See Instructions): IN

CUSIP No.  50540R409	13D	Page 5 of 9

This filing amends a Schedule 13D filed by the Reporting Persons on
November 3, 2005.  The Reporting Persons (as defined below) listed on the
cover page to this  Schedule 13D hereby make the following Statement
pursuant to Section 13(d) of the Securities Exchange Act of 1934
(the "Exchange Act") and the rules and regulations promulgated thereunder.

ITEM 1.  SECURITY AND ISSUER
The class of equity securities to which this Statement relates is the
common stock, $0.10 par value per share (the "Common Stock"), of Laboratory
Corporation of America, a Delaware corporation (the "Issuer").  The
principal executive offices of the Issuer are located at 358 South Main
Street, Burlington, North Carolina 27215.

ITEM 2.  IDENTITY AND BACKGROUND
This statement is being filed on behalf of (a) Longview Asset Management,
LLC ("Longview"); (b) James A. Star ("Mr. Star") and (c) Geoffrey F.
Grossman, not individually but solely as Trustee of the Edward Memorial
Trust, the Managing Member of Longview ("Mr. Grossman" and, together with
Longview and Mr. Star, the "Reporting Persons").

Longview's principal business is managing investment portfolios for its
clients ("Longview Clients").  The principal place of business and
principal offices of Longview are located at 222 N. LaSalle Street,
Suite 2000, Chicago, Illinois 60601.  Longview Clients include certain
of the Reporting Persons, their family members, entities in which the
foregoing individuals hold interests, and trusts for their benefit
("Reporting Person Family Members and Entities").  Certain Longview
Clients, including without limitation Reporting Person Family Members
and Entities, hold shares of Common Stock.  Longview has sole voting
and dispositive power over the Common Stock held in Longview Clients'
securities accounts and, accordingly, is deemed to be the beneficial
owner, for purposes of Section 13(d) of the Securities Exchange Act
of 1934, as amended (the "1934 Act"), of the Common Stock held in such
accounts.  Except for such deemed beneficial ownership, Longview does
not own any Common Stock or other securities of the Issuer.  No single
Longview Client owns more than 5% of the outstanding shares of Common
Stock of the Issuer.

Mr. Star is the President of Longview.  His principal place of business
and principal office is located at 222 N. LaSalle Street, Suite 2000,
Chicago, Illinois 60601.

Mr. Grossman is a Partner of Seyfarth Shaw LLP, a Chicago, Illinois law
firm.  His place of business and principal office is located at 131 S.
Dearborn Street, Suite 2400 Chicago, Illinois 60603.

CUSIP No.  50540R409	13D	Page 6 of 9

During the last five years, none of the Reporting Persons or any officer
or director of Longview has been convicted in a criminal proceeding
(excluding traffic violations and similar misdemeanors).  During the
last five years, none of the Reporting Persons or any officer or director
of Longview has been a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction which resulted in a judgment,
decree or final order (i) enjoining future violations of, or prohibiting
or mandating activities subject to, federal or state securities laws or
(ii) finding a violation with respect to such laws.

Longview is a limited liability company formed under the laws of the State
of Delaware.

Mr. Star and Mr. Grossman are citizens of the United States of America.

ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION
The securities of the Issuer were acquired by or on behalf of Longview
Clients in open market transactions over the period beginning September 4,
2001 and continuing through March 1, 2007.  Longview Clients effected such
acquisitions using cash on hand.

ITEM 4.  PURPOSE OF TRANSACTION
Longview Clients beneficially own all of the shares of Common Stock of the
Issuer reported by Longview hereunder.  The securities reported hereunder
were acquired and are held by Longview Clients for investment purposes.
Longview Clients have no present plans to acquire additional securities of the
Issuer, or dispose of securities of the Issuer.  Depending on market conditions
and other factors that the Reporting Persons may deem material, the Reporting
Persons may purchase additional shares of Common Stock on behalf of Longview
Clients in the open market or in private transactions.  Depending on these
same factors, the Reporting Persons may sell all or a portion of the shares
of Common Stock beneficially owned by such persons in the open market or in
private transactions.

Representatives of Longview have participated, and may participate in the
future, in discussions with the Issuer's management about matters relating
to the business, operations and assets of the Issuer and matters related
thereto, including matters that may be specified in Items 4(a)-(j) of
Schedule 13D.  Also, consistent with the investment purpose, the Reporting
Persons may engage in communications with one or more shareholders of the
Issuer and one or more members of the board of directors of the Issuer,
regarding the Issuer and its business, operations, assets, management,
governance, ownership or capital structure.

Except the extent that the foregoing may be deemed a plan or proposal, none
of the Reporting Persons has any plans or proposals which relate to, or could
result in, any of the matters referred to in paragraphs (a) through (j),
inclusive, of the Instructions to Item 4 of Schedule 13D.  The

CUSIP No.  50540R409	13D	Page 7 of 9

Reporting Persons may, at any time and from time to time, review or
reconsider their position and/or change their purpose and/or formulate
plans or proposals with respect thereto.

ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER
(a) - (b)

(i) By virtue of its management of Longview Clients' securities
accounts, including accounts held for the benefit of certain of the
Reporting Persons and Reporting Person Family Members and Entities, as of
March 1, 2007 Longview may be deemed to beneficially own 7,584,731 shares
of Common Stock, representing approximately 6.20% of the outstanding shares
of Common Stock, calculated in accordance with Rule 13d-3 under the Exchange
Act (based upon 122,400,000 shares of Common Stock issued and outstanding as
of March 1, 2007 as reported by the Issuer in its Annual Report on Form 10-K
for the quarter ended December 31, 2006, filed on March 1, 2007).  Longview
shares the power to vote and dispose of the 7,584,731 shares of Common Stock
which it may be deemed to beneficially own.

(ii)  Mr. Star may be deemed to beneficially own an aggregate of 7,584,731
shares of Common Stock as of March 1, 2007, representing in the aggregate
approximately 6.20% of the outstanding shares of Common Stock as of such date,
calculated in accordance with Rule 13d-3 under the Exchange Act, by virtue of
his status as President of Longview.  Mr. Star shares the power to vote and
dispose of the 7,584,731 shares of Common Stock which he may be deemed to
beneficially own.  Mr. Star and members of his immediate family owns shares
of Common Stock, and are partners in certain partnerships that own shares of
Common Stock, that are managed by Longview, all of which shares are reported
hereunder as being beneficially owned by Longview and Mr. Star.  Mr. Star
disclaims beneficial ownership of the shares of Common Stock reported hereunder
in excess of his pecuniary interest in such shares.

(iii) Geoffrey F.  Grossman, not individually but solely as Trustee of the
Edward Memorial Trust, may be deemed to beneficially own 7,584,731 shares of
Common Stock as of March 1, 2007, representing approximately 6.20% of the
outstanding shares of Common Stock as of such date, calculated in accordance
with Rule 13d-3 under the Exchange Act, by virtue of his status as Trustee of
the Edward Memorial Trust, the sole member of Longview.  Mr. Grossman, not
individually but solely as Trustee of the Edward Memorial Trust, shares the
power to vote and dispose of the 7,584,731 shares of Common Stock which he
may be deemed to beneficially own.  Mr. Grossman has no pecuniary interest
in any of the shares he may be deemed to beneficially own.  Mr. Grossman
disclaims beneficial ownership of all of the shares reported hereunder.

(c)  The following transactions in shares of Common Stock which are deemed to
be beneficially owned by the Reporting Persons occurred during the past sixty
days in the public market:

(i) 	February 15, 2007	Purchased 40,650 shares at $78.7819 per share
(ii)	February 21, 2007	Purchased 4,250 shares at $79.8476 per share
(iii)	February 23, 2007	Purchased 18,500 shares at $79.9261 per share
(iv)	February 26, 2007	Purchased 19,000 shares at $79.9406 per share
(v)	February 27, 2007	Purchased 112,486 shares at $79.0464 per share
(vi)	February 27, 2007	Purchased 37,000 shares at $79.5123 per share
(vii)	February 28, 2007	Purchased 16,551 shares at $78.8085 per share
(viii)	March 1, 2007		Purchased 200,000 shares at $71.2956 per share

(d)  Each Longview Client has the right to receive dividends, if any, paid in
respect of, and the proceeds from the sale of, the securities reported
hereunder.  Mr. Star does not have the power to receive dividends paid in
respect of, and the proceeds from the sale of, the securities reported
hereunder, except to the extent of his pecuniary interest in such securities.
Neither Longview nor Mr. Grossman has the right to receive dividends paid in
respect of, or the proceeds from the sale of, the securities reported
hereunder.

(e)  Not applicable.

ITEM 6.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
TO SECURITIES OF THE ISSUER

As part of its client relationships, Longview has the power to direct the voting
and the disposition of shares of Common Stock owned by Longview Clients in the
accounts that Longview manages, pursuant to investment advisory agreements.
None of such agreements, however, require that such accounts be invested in
securities of the Issuer or include in their provisions any terms specifically
relating to or varying with the investment of the accounts in securities of the
Issuer. Other than (i) the Reporting Persons' investment advisory agreements
entered into with Longview, as described above, (ii) Mr. Star's participation
in the management of Longview, and (iii) Mr. Grossman's ownership interest in
Longview, not individually but solely as the Trustee of the Edward Memorial
Trust, none of the Reporting Persons is a party to any contract, arrangement,
understanding or relationship (legal or otherwise) with respect to any
securities of the Issuer.

CUSIP No.  50540R409	13D	Page 8 of 9

ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS
See Exhibit Index appearing below, which is incorporated herein by reference.
After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

	Longview Asset Management, LLC

	By: ___/s/ James A. Star ________________
		James A. Star, President



	___/s/ James A. Star ___________________
	James A. Star, as President



	___/s/ Geoffrey F. Grossman_____________
	Geoffrey F. Grossman, not individually but
	solely as trustee of the Edward Memorial Trust

CUSIP No.  50540R409	13D	Page 9 of 9

EXHIBIT INDEX

1.        Joint Filing Agreement dated as of February 28, 2007 by and among
the Reporting Persons.

EXHIBIT 99.1

JOINT FILING AGREEMENT
In accordance with Rule 13d-1(f) under the Securities Exchange Act of 1934,
as amended, each of the undersigned does hereby consent and agree to the
joint filing on behalf of each of them of a Statement on Schedule 13D and
all amendments thereto with respect to Laboratory Corporation of America
Common Stock, par value $0.10 per share, beneficially owned by each of them,
and to the inclusion of this Joint Filing Agreement as an exhibit thereto.

February 28, 2007

	Longview Asset Management, LLC

	By: ___/s/ James A. Star ________________
		James A. Star, President



	___/s/ James A. Star ___________________
	James A. Star, as President



	___/s/ Geoffrey F. Grossman_____________
	Geoffrey F. Grossman, not individually but
	solely as trustee of the Edward Memorial Trust