UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                       ----------------------------------


                                    FORM 8-K

                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

      Date of report (Date of earliest event reported): September 10, 2004
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                               CYTOGEN CORPORATION
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               (Exact Name of Registrant as Specified in Charter)

     Delaware                         000-14879                  22-2322400
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(State or Other Jurisdiction    (Commission File Number)     (I.R.S. Employer
     of Incorporation)                                       Identification No.)

  650 College Road East, CN 5308, Suite 3100, Princeton, NJ           08540
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     (Address of Principal Executive Offices)                       (Zip Code)

       Registrant's telephone number, including area code: (609) 750-8200
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          (Former Name or Former Address, if Changed Since Last Report)

     Check the  appropriate  box below if the Form 8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

     |_| Written  communications  pursuant to Rule 425 under the  Securities Act
(17 CFR 230.425)

     |_| Soliciting  material pursuant to Rule 14a-12 under the Exchange Act (17
CFR 240.14a-12)

     |_| Pre-commencement  communications  pursuant to  Rule 14d-2(b)  under the
Exchange Act (17 CFR 240.14d-2(b))

     |_| Pre-commencement  communications  pursuant to  Rule 13e-4(c)  under the
Exchange Act (17 CFR 240.13e-4(c))



ITEM 1.01  ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT.

     On September 10, 2004,  Cytogen  Corporation (the "Company") entered into a
non-exclusive  Manufacturing  Agreement (the  "Agreement") with Laureate Pharma,
L.P.   ("Laureate")  for  the  Company's  ProstaScint  product.  All  terms  not
specifically  defined  herein  shall have the  meaning  ascribed  to them in the
Agreement.

     The Agreement is effective immediately and shall terminate,  unless earlier
terminated  pursuant to the terms  thereof,  upon  Laureate's  completion of the
Production  Campaign  and shipment of the  resulting  products  from  Laureate's
Facility in Princeton,  NJ. It is intended  that the Agreement  will provide the
Company  with a  sufficient  supply of  ProstaScint  to satisfy  its  commercial
requirements  for  approximately  the next four years based upon  current  sales
levels.

     The Company  has sought  confidential  treatment  from the  Securities  and
Exchange  Commission  for  certain  portions  of the  Agreement.  A copy  of the
redacted  Agreement is attached as Exhibit  10.1 to this Current  Report on Form
8-K and is incorporated  herein by reference.  The foregoing  description of the
Agreement is qualified in its entirety by reference to such Exhibit.

ITEM 9.01  FINANCIAL STATEMENTS AND EXHIBITS

(c) Exhibits.

    Exhibit No.       Description
    -----------       -----------
       10.1*          Manufacturing  Agreement  dated September 10, 2004  by and
                      between the Company and Laureate Pharma, L.P.

* The Company has submitted an application for  confidential  treatment with the
Securities and Exchange Commission with respect to certain provisions  contained
in this exhibit.  The copy filed as an exhibit omits the information  subject to
the confidentiality application.




                                   SIGNATURES

     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                        CYTOGEN CORPORATION



                                        By: /s/ Michael D. Becker
                                           -------------------------------------
                                           Michael D. Becker
                                           President and Chief Executive Officer

Dated:   September 14, 2004






                                  EXHIBIT INDEX


          Exhibit No.       Description
          -----------       -----------

             10.1*          Manufacturing  Agreement dated  September 10, 2004
                            by and between the Company and Laureate Pharma, L.P.

* The Company has submitted an application for  confidential  treatment with the
Securities and Exchange Commission with respect to certain provisions  contained
in this exhibit.  The copy filed as an exhibit omits the information  subject to
the confidentiality application.