ROYALTY PARTICIPATION AGREEMENT

     This Royalty Rights Agreement (the "Royalty  Agreement") is entered into by
and  between In  Veritas  Medical  Diagnostics,  Inc.,  a Colorado  Corporation,
located at 1220 The Green  House,  Beechwood  Business  Park  North,  Inverness,
Scotland IV2 3BL (the "Company") and The Rubin Family  Irrevocable  Stock Trust,
located at 25 Highland Boulevard, Dix Hills, New York 11746 (the "Investor").

                                    RECITALS

     WHEREAS, the Company and its wholly owned subsidiaries ("The Group") are in
the  business  of  developing  medical  diagnostic  products  for  personal  and
professional  use based on technology that utilizes the Hall Effect,  a physical
phenomenon  that  measures  the  electrical  activity  as it relates to magnetic
fields; and

     WHEREAS,  the Group has entered  into a license  agreement  with  Inverness
Medical Innovations, Inc. (the "IMI Agreement") pursuant to which the Group will
receive royalties from the sale of a prothrombin blood clotting measuring device
(the "IMI Royalties); and

     WHEREAS,  Investor  has agreed to  provide,  and the  Company has agreed to
accept, an aggregate  investment  amount of $250,000 (the "Principal  Investment
Amount"); and

     WHEREAS,  the  consideration  for the  Principal  Investment  Amount is the
provision of a percentage of the royalties  received by the Company  pursuant to
the IMI Agreement (the "Royalty Payments"); and

     WHEREAS,  the Investor and the Company  wish to define with  precision  the
terms and conditions of the Royalty Payments;

     THEREFORE,  in  consideration  of the  mutual  considerations  herein,  the
receipt of which is mutually acknowledged, the parties hereto agree as follows:

1. PAYMENT. Investor shall provide a $250,000 cash payment to the Company upon
execution hereof.

2. SOURCE, AMOUNT AND TIMING OF ROYALTY PAYMENTS.

     (a) Commencing upon receipt of the $250,000 cash payment, the Company shall
pay to Investor  Royalty  Payments  consisting  of 5.56  percent  (5.56%) of the
future IMI Royalties received by the Company. The Royalty Payments shall be paid
to the  Investor  within 15 days of the end of the  month in which  the  Company
receives future IMI Royalties.

     (b) If no Royalty  Payments  have been paid to the Investor by December 31,
2007,  the Investor  shall have the option,  for a 30 day period  commencing  on
January 1, 2008 and ending on January 31, 2008, to convert the funds received by
the Company pursuant to this Agreement into:

          (i)  a royalty  participation  from any other product that the Company
               may have  developed and entered into a license  agreement for (an
               "Alternative  Royalty Stream").  Such Alternative  Royalty Stream
               shall be for the same percentage of royalties  agreed to pursuant
               to this Agreement (i.e.,  5.56%) from such other product that the
               Company may have  developed and entered into a license  agreement
               for; or


          (ii) a three (3) year,  promissory note with a face value equal to the
               difference  between (x) 300% of the Principal  Investment  Amount
               and  (y)  the  Royalty  Payments  made  to  and  received  by the
               Investor,  bearing interest at a rate of prime plus three percent
               (3%).

     (c) In the event that, by December 31, 2007,  (i) the Company has made some
Royalty Payments to the Investor,  but such Royalty Payments have not totaled an
aggregate  amount that equals or exceeds the Principal  Investment  Amount,  and
(ii) the Company has received a minimum of  $3,000,000  in net proceeds from new
equity  financing  subsequent  to the date hereof,  then and in such event,  the
Company shall be obligated to make a payment (the  "Contingent  Payment") to the
Investor  equal to the difference  between (x) the Royalty  Payments made to and
received by the Investor and (y) the Principal Investment Amount. The Contingent
Payment  shall be deemed an advance on future  Royalty  Payments  payable to the
Investor  pursuant to this  Agreement  on a first in first out basis.  Following
payment of the Contingent Payment, the Investor shall not be entitled to receive
additional  Royalty  Payments  until such time as Royalty  Payments equal to the
Principal  Investment  Amount  have  accrued  pursuant  to Section  2(a) of this
Agreement. The Contingent Payment shall be capped at the amount by which the net
proceeds from new equity financing exceeds $3,000,000.

     (d) If the  Investor  has not  been  paid  Royalty  Payments  equal  to the
Principal  Investment  Amount by December 31, 2008,  the Investor shall have the
option,  for a 30 day period commencing on January 1, 2009 and ending on January
31,  2009,  to  convert  the funds  received  by the  Company  pursuant  to this
Agreement into:



          (i)  a royalty  participation  from any other product that the Company
               may have  developed and entered into a license  agreement for (an
               "Alternative  Royalty Stream").  Such Alternative  Royalty Stream
               shall be for the same percentage of royalties  agreed to pursuant
               to this Agreement (i.e.,  5.56%) from such other product that the
               Company may have  developed and entered into a license  agreement
               for; or

          (ii) a three (3) year  promissory  note with a face value equal to the
               difference  between (x) 300% of the Principal  Investment  Amount
               and  (y)  the  Royalty  Payments  made  to  and  received  by the
               Investor,  bearing interest at a rate of prime plus three percent
               (3%).

3.  INFORMATION  REQUIRED TO BE SUPPLIED  WITH EACH  PAYMENT.  With each Royalty
Payment,  the Company  shall  supply to the  Investor an  accounting  of the IMI
Royalties upon which the Royalty Payment was calculated.

4. TERMINATION. The Company shall have the option to terminate this Agreement at
any time, without penalty, by making a lump sum payment to the Investor equal to
300% of the funds received from the Investor  pursuant to this  Agreement,  less
the amount of any  Contingent  Payment paid to the Investor  pursuant to Section
2(b) of this Agreement (the "Termination Payment").

5. NO SALE OR  ASSIGMENT  BY  COMPANY.  During the term of this  Agreement,  the
Company may not sell, assign or otherwise transfer or encumber the IMI Agreement
or the right to receive  royalties  pursuant to the IMI Agreement without either
(i)  obtaining  the written  consent of the  Investor to such sale,  assignment,
transfer or encumbrance,  or (i) making the Termination  Payment provided for in
Paragraph 4 above.

6.  CONFIDENTIALITY.  The  Investor  acknowledges  that in the  course of normal
reporting,  Investor may have access to and become  familiar  with  confidential
information of the Company,  including, but not limited to financial information
of Company,  customer  information,  marketing and pricing information and data,
and  other  technical,  marketing  and/or  business  information  (collectively,
"Confidential  Information").  The  Investor  agrees  to not  use in any  way or



disclose  to any  person or entity  any such  Confidential  Information,  either
directly or indirectly,  either during the term of this Agreement or at any time
thereafter,  except as required by legal proceedings. The Investor shall further
take  reasonable  precautions  and act in such a  manner  as to  ensure  against
unauthorized  disclosure or use of the  Confidential  Information.  This Section
shall survive termination of this Agreement.

7. NOTICES: If to the Company, to:

                  In Veritas Medical Diagnostics, Inc.
                  The Green House
                  Beechwood Business Park North
                  Inverness, Scotland IV2 3BL
                  Telephone:
                  Facsimile:

                  Copies to:

                  Richard A. Friedman, Esq.
                  Sichenzia Ross Friedman Ference LLP
                  1065 Avenue of the Americas
                  New York, NY 10018
                  Telephone:       212-930-9700
                  Facsimile:       212-930-9725

                  If to Investor, to:  The Rubin Family Irrevocable Stock Trust
                                       25 Highland Boulevard
                                       Dix Hills, New York 11746
                  Telephone:       631-595-9367
                  Facsimile:       631-254-2136

8. ASSIGNMENT BY INVESTOR. Subject to the Company's approval (which shall not be
unreasonably withheld),  Investor may assign a portion or all of his interest in
this Agreement to an assignee.

9. SALE OF COMPANY. In the event that a substantial change of control or sale of
the Company occurs,  that the Investor rights under this Agreement will become a
recognized obligation of any new controlling group or successor company.

10.  APPLICABLE  LAW,  VENUE,   JURISDICTION.   All  questions   concerning  the
construction, validity, enforcement and interpretation of the Agreement shall be
governed by and construed  and enforced in accordance  with the internal laws of
the State of New York,  without  regard to the  principles  of  conflicts of law
thereof.   Each  party  agrees  that  all  legal   proceedings   concerning  the
interpretations,  enforcement  and defense of the  transactions  contemplated by
this  Agreement  (whether  brought  against  a party  hereto  or its  respective
affiliates,  directors,  officers,  shareholders,  employees or agents) shall be
commenced exclusively in the state and federal courts sitting in the City of New
York. Each party hereby irrevocably submits to the exclusive jurisdiction of the
state and federal courts  sitting in the City of New York,  borough of Manhattan
for the adjudication of any dispute hereunder or in connection  herewith or with
any transaction  contemplated hereby or discussed herein, and hereby irrevocably
waives,  and agrees not to assert in any suit,  action or proceeding,  any claim
that it is not personally  subject to the  jurisdiction of any such court,  that
such suit,  action or  proceeding  is  improper or  inconvenient  venue for such
proceeding. The parties hereby waive all rights to a trial by jury.



COMPANY:                                             INVESTOR:

In Veritas Medical Diagnostics, Inc.    The Rubin Family Irrevocable Stock Trust

/s/ Martin Thorp                        /s/ Margery Rubin
- --------------------------              -----------------------
Printed Name: Martin Thorp              Printed:  Margery Rubin

Title: Chief Financial Officer          Title: Trustee

Date: May 3, 2006                       Date:  May 3, 2006