FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN 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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1. Name and Address of Reporting Person * ASSELTA MICHAEL J   2. Issuer Name and Ticker or Trading Symbol LABONE INC/ [LABS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Exec. VP, COO (Last) (First) (Middle) 10101 RENNER BLVD. 3. Date of Earliest Transaction (Month/Day/Year) 03/15/2005 (Street) LENEXA, KS 66219 4. If Amendment, Date Original Filed(Month/Day/Year) 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 Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 03/15/2005   M   3,256 A $ 15.4 3,256 D   Common Stock 03/15/2005   S   3,256 D $ 34.286 0 D   Common Stock 03/15/2005   M   4,537 A $ 17.72 4,537 D   Common Stock 03/15/2005   S   4,537 D $ 34.286 0 D   Common Stock 03/15/2005   M   15,000 A $ 15.9 15,000 D   Common Stock 03/15/2005   S   15,000 D $ 34.286 0 D   Common Stock 03/15/2005   J   231 A (2) 3,487 I (2) By 401(k) Plan

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Common Stock

$ 15.4

03/15/2005

M

3,256

01/01/2002

01/01/2012

Common Stock

3,256

$ 15.4

0

D

Common Stock

$ 17.72

03/15/2005

M

4,537

01/01/2003

01/01/2013

Common Stock

4,537

$ 17.72

0

D

Common Stock

$ 15.9

03/15/2005

M

15,000

02/27/2007(1)

02/27/2012

Common Stock

15,000

$ 15.9

30,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ASSELTA MICHAEL J 10101 RENNER BLVD. LENEXA, KS 66219			Exec. VP, COO

Signatures

Michael J Asselta By Randy Shelton attorney-in-fact		03/17/2005
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(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)	The option vests in five equal annual installments beginning on February 27, 2003.
(2)	The reporting person acquired 231 shares of Common Stock between February 27,2004 and March 15, 2005 under the LabOne, Inc., Profit Sharing 401(k) Plan. The information in this report is based on a plan statement dated as of March 15, 2005.

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