FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   Chen Thomas F 2. Date of Event Requiring Statement (Month/Day/Year) 04/24/2006 3. Issuer Name and Ticker or Trading Symbol ABBOTT LABORATORIES [ABT] (Last) (First) (Middle) 100 ABBOTT PARK ROAD 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Senior Vice President 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) ABBOTT PARK, IL 60064-6400 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common shares without par value 57,140 D   Common shares without par value 16,708 (1) I Profit Sharing Trust Common shares without par value 23,798 (2) I By wife Common shares without par value 2,476 (2) I By self for daughter

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Option (right to buy) (3)	02/12/2002	02/11/2009	Common shares	40,433	$ 42.4978	D	Â
Option (right to buy) (3)	01/18/2001	02/13/2007	Common shares	5,137	$ 39.716	D	Â
Option (right to buy) (3)	05/21/2001	02/12/2008	Common shares	15,202	$ 49.4617	D	Â
Option (right to buy) (3)	02/09/2004	02/08/2011	Common shares	53,202	$ 45.4488	D	Â
Option (right to buy) (3)	06/22/2002	02/10/2010	Common shares	9,686	$ 52.2529	D	Â
Option (right to buy) (3)	02/15/2005	02/14/2012	Common shares	53,201	$ 53.625	D	Â
Option (right to buy) (3)	06/03/2003	02/10/2010	Common shares	20,437	$ 41.1445	D	Â
Option (right to buy) (3)	02/14/2006	02/13/2013	Common shares	3,050	$ 33.2314	D	Â
Option (right to buy) (3)	12/06/2003	02/10/2010	Common shares	12,804	$ 41.9715	D	Â
Option (right to buy) (3)	02/20/2006	02/19/2014	Common shares	21,281	$ 41.0317	D	Â
Option (right to buy) (3)	02/20/2007	02/19/2014	Common shares	10,639	$ 41.0317	D	Â
Option (right to buy) (3)	10/21/2004	02/13/2013	Common shares	15,585	$ 41.5392	D	Â
Option (right to buy) (3)	05/10/2005	02/13/2007	Common shares	2,701	$ 44.96	D	Â
Option (right to buy) (3)	05/10/2005	02/10/2010	Common shares	2,223	$ 44.96	D	Â
Option (right to buy) (3)	05/10/2005	02/12/2008	Common shares	2,283	$ 44.96	D	Â
Option (right to buy) (3)	05/10/2005	02/12/2008	Common shares	18,444	$ 44.96	D	Â
Option (right to buy) (4)	02/18/2006	02/17/2015	Common shares	11,600	$ 46.34	D	Â
Option (right to buy) (4)	02/18/2007	02/17/2015	Common shares	11,600	$ 46.34	D	Â
Option (right to buy) (4)	02/18/2008	02/17/2015	Common shares	11,600	$ 46.34	D	Â
Option (right to buy) (4)	11/26/2005	02/13/2013	Common shares	14,418	$ 48.67	D	Â
Option (right to buy) (4)	08/15/2006	02/13/2013	Common shares	12,441	$ 42.83	D	Â
Option (right to buy) (4)	02/17/2007	02/16/2016	Common shares	12,000	$ 44.16	D	Â
Option (right to buy) (4)	02/17/2008	02/16/2016	Common shares	12,000	$ 44.16	D	Â
Option (right to buy) (4)	02/17/2009	02/16/2016	Common shares	12,000	$ 44.16	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Chen Thomas F 100 ABBOTT PARK ROAD ABBOTT PARK, IL 60064-6400	Â	Â	  Senior Vice President	Â

Signatures

John A. Berry by power of attorney for Thomas F. Chen		05/01/2006
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Balance in the Abbott Laboratories Stock Retirement Trust as of April 28, 2006.
(2)	Reporting person disclaims beneficial ownership of securities held by his wife and daughter.
(3)	Employee stock options granted pursuant to the Abbott Laboratories 1996 Incentive Stock Program, including a replacement option feature, in a transaction exempt from Section 16(b) under Rule 16b-3.
(4)	Employee stock options granted pursuant to the Abbott Laboratories 1996 Incentive Stock Program in a transaction exempt from Section 16(b) under Rule 16b-3.

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