Exhibit 10.32

Business Development Addendum to the Distributor Agreement

This Business Development Addendum to the Distributor Agreement (the “BD Addendum”) is made and entered into as of this 1^st day of February 2010 (the “BD Addendum Effective Date”), by and between diaDexus, Inc. (“DIADEXUS”), and Inova Diagnostics, Inc. (“INOVA”).

WHEREAS, INOVA and DIADEXUS are parties to the Distributor Agreement effective January 30, 2007 and modified by Addenda No.1, No.2 and No.3 on February 1, 2007, June 15, 2007 and October 28, 2008, respectively (collectively, the “Agreement”) by virtue of assignment of the Agreement to INOVA by The Binding Site Inc., under the acquisition agreement dated July 8, 2009 between INOVA and The Binding Site;

WHEREAS, DIADEXUS has consented to such assignment of the Agreement under the Consent to Assignment effective July 10, 2009 between DIADEXUS, The Binding Site Inc., and INOVA; and

WHEREAS, DIADEXUS and INOVA agree to the terms and conditions and amendments the Agreement as set forth below.

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ENTIRE AGREEMENT; In the event of any conflict between the terms and conditions of this BD Addendum and the Agreement, the terms and conditions of this BD Addendum shall control. Except as otherwise provided in the BD Addendum, the parties agree that all provisions of the Agreement are hereby ratified and agreed to be in full force and effect and are incorporated herein by reference. This BD Addendum and the Agreement (as amended hereby), including without limitation all attachments hereto, contain the entire agreement among the parties relating to the subject matter herein and all prior proposals, discussions and writings by and among the parties and relating to the subject matter herein, whether written or oral, are superseded hereby and thereby. None of the terms of this BD Addendum shall be deemed to be amended unless such addendum is in writing, signed by all parties hereto, and recites specifically that it is an addendum to the terms of this BD Addendum and Agreement.

IN WITNESS WHEREOF, the parties hereto have caused this BD Addendum to be executed by their fully authorized representatives.

EXHIBIT A

DIADEXUS LABELED PRODUCTS INCLUDED IN DISTRIBUTOR AGREEMENT:

Table 1 lists the Products INOVA may distribute [*].

Table 1.

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