FIRST AMENDMENT TO LEASE AGREEMENT (MULTI-TENANT FACILITY)

Exhibit 10.28

FIRST AMENDMENT TO

LEASE AGREEMENT

(MULTI-TENANT FACILITY)

This First Amendment (“ First Amendment ”) is entered into this 11 th  day of December, 2006 with regard to that certain Lease Agreement (Multi-Tenant Facility) dated February 8, 2006 (“ Lease ”), by and between YORK COUNTY, LLC , a California limited liability company (“ Landlord ”) and CORGENIX MEDICAL CORPORATION, a Nevada corporation (“ Tenant ”), for that certain approximate thirty-two thousand (32,480) rentable square feet of space (“ Property ”) located in Landlord’s approximate one hundred two thousand four hundred (102,400) square foot building known as Broomfield 1, located at 11575 Main Street, City and County of Broomfield, State of Colorado (“ Project ”).

WHEREAS, the parties desire to modify the Lease pursuant to the terms as herein set forth.

NOW, THEREFORE, in consideration of the mutual covenants set forth below, it is agreed as follows:

1.                All capitalized terms not otherwise defined herein shall have the meanings ascribed to them in the Lease.

2.                Landlord and Tenant hereby acknowledge and agree that the Commencement Date (as defined in Section 1.05 of the Lease) is July 6, 2006.

3.                To incorporate the Base Rent credit addressed in Section 2.02 of the Lease, Landlord and Tenant hereby acknowledge and agree that the Base Rent matrix set forth in Section 1.12(a) of the Lease is hereby deleted in its entirety and replaced with the following revised Base Rent matrix: