DIANON SYSTEMS INC

Q: Sep 30 2002

Q: Jun 30 2002

Q: Mar 31 2002

FY: Dec 31 2001

FY: Dec 31 2001

Q: Sep 30 2001

Q: Jun 30 2001

Q: Mar 31 2001

FY: Dec 31 2000

Q: Sep 30 2000

Q: Jun 30 2000

Q: Mar 31 2000

FY: Dec 31 1999

Q: Sep 30 1999

Q: Jun 30 1999

Q: Mar 31 1999

FY: Dec 31 1998

Q: Sep 30 1998

Q: Jun 30 1998

Q: Mar 31 1998

5

5,7

5,7

4,7

4,7

7

2,7

5,7

2,7

Certification of termination of registration of a class of securities (Section 12(g))

No description available

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Post Effective Amendment to S-8

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Additional Information for Proxy Statement/ Votes

No description available

No description available

Additional proxy soliciting materials filed by a non-management party

Additional proxy soliciting materials filed by a non-management party

Additional proxy soliciting materials filed by a non-management party

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

WESTFIELD CAPITAL MANAGEMENT CO LLC

WESTFIELD CAPITAL MANAGEMENT CO LLC

RS INVESTMENT MANAGEMENT CO LLC

BLUM CAPITAL PARTNERS LP

BLUM CAPITAL PARTNERS LP

BLUM CAPITAL PARTNERS LP

BLUM CAPITAL PARTNERS LP

FMR CORP

BLUM CAPITAL PARTNERS LP

GILBERT G S BECKWITH

BARRY JAMES T

GILBERT G S BECKWITH

GILBERT G S BECKWITH

FEINBERG LARRY N

GILBERT G S BECKWITH

GILBERT G S BECKWITH

GILBERT G S BECKWITH

FEINBERG LARRY N

RS INVESTMENT MANAGEMENT CO LLC

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)