**Exhibit 10.28**

**FIRST AMENDMENT TO**

**LEASE AGREEMENT**

**(MULTI-TENANT FACILITY)**

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

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

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

1.               All capitalizedterms not otherwise defined herein shall have the meanings ascribed to them in theLease.

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

3.               To incorporate theBase Rent credit addressed in Section 2.02 of the Lease, Landlord andTenant hereby acknowledge and agree that the Base Rent matrix set forth inSection 1.12(a) of the Lease is hereby deleted in its entirety andreplaced with the following revised Base Rent matrix:
| ** **         | ** ** | **Square  Feet** | ** ** | **Base  Lease  Rate** | ** ** | **Amortized  Tenant  Improvements** | ** ** | **Estimated  Operating  Expenses** | ** ** | **Subtotal  per SF** | ** ** | **Square  Feet** | ** ** | **Base  Lease  Rate** | ** ** | **Estimated  Operating  Expenses** | ** ** | **Subtotal  per SF** | ** ** | **Combined  Square  Feet** | ** ** | **Combined  Total  Rent  per SF** | ** ** |
|--------------------|------------|------------------|------------|-----------------------|------------|-------------------------------------|------------|------------------------------------|------------|---------------------------|------------|------------------|------------|-----------------------|------------|------------------------------------|------------|---------------------------|------------|----------------------------|------------|----------------------------------------|------------|
| 7/6/06 - 8/27/06   |       | 25,600           |       | $                     |       |                                | $          |                               |       | $                         | 1.61       |             | $          | 1.61                  |       | 6,400                              |       | $                         |       |                       | $          | 1.61                                   |       | $ | 1.61 |   | 32,000 |   | $ | 1.61 |   |
| 8/28/06 - 1/27/07  |       | 25,000           |       | $                     |       |                                | $          |                               |       | $                         | 1.61       |             | $          | 1.61                  |       | 6,400                              |       | $                         |       |                       | $          | 1.61                                   |       | $ | 1.61 |   | 32,000 |   | $ | 1.61 |   |
| 1/28/07 - 8/27/07  |       | 25,000           |       | $                     | 4.00       |                                | $          | 5.24                               |       | $                         | 1.61       |             | $          | 10.85                 |       | 6,400                              |       | $                         |       |                       | $          | 1.61                                   |       | $ | 1.61 |   | 32,000 |   | $ | 9.00 |   |
| 8/28/07 - 1/27/08  |       | 25,000           |       | $                     | 4.00       |                                | $          | 5.24                               |       | $                         | 1.61       |             | $          | 10.85                 |       | 6,400                              |       | $                         | 3.00       |                       | $          | 1.61                                   |       | $ | 4.61 |   | 32,000 |   | $ | 9.60 |   |
| 1/28/08 - 1/27/09  |       | 25,000           |       | $                     | 5.64       |                                | $          | 5.24                               |       | $                         | 1.61       |             | $          | 12.49                 |       | 6,400                              |       | $                         | 3.09       |                       | $          | 1.61                                   |       | $ | 4.70 |   | 32,000 |   | $ | 10.93 |   |
| 1/28/09 - 1/27/10  |       | 25,000           |       | $                     | 6.85       |                                | $          | 5.24                               |       | $                         | 1.61       |             | $          | 13.70                 |       | 6,400                              |       | $                         | 3.18       |                       | $          | 1.61                                   |       | $ | 4.79 |   | 32,000 |   | $ | 11.92 |   |
| 1/28/10 - 1/27/11  |       | 25,000           |       | $                     | 7.19       |                                | $          | 5.24                               |       | $                         | 1.61       |             | $          | 14.04                 |       | 6,400                              |       | $                         | 3.28       |                       | $          | 1.61                                   |       | $ | 4.89 |   | 32,000 |   | $ | 12.21 |   |
| 1/28/11 - 1/27/12  |       | 25,000           |       | $                     | 7.55       |                                | $          | 5.24                               |       | $                         | 1.61       |             | $          | 14.40                 |       | 6,400                              |       | $                         | 3.38       |                       | $          | 1.61                                   |       | $ | 4.99 |   | 32,000 |   | $ | 12.52 |   |
| 1/28/12 - 1/27/13  |       | 25,000           |       | $                     | 7.93       |                                | $          | 5.24                               |       | $                         | 1.61       |             | $          | 14.78                 |       | 6,400                              |       | $                         | 3.48       |                       | $          | 1.61                                   |       | $ | 5.09 |   | 32,000 |   | $ | 12.84 |   |
| 1/28/13 - 11/27/13 |       | 25,000           |       | $                     | 8.33       |                                | $          | 5.24                               |       | $                         | 1.61       |             | $          | 15.18                 |       | 6,400                              |       | $                         | 3.58       |                       | $          | 1.61                                   |       | $ | 5.19 |   | 32,000 |   | $ | 13.18 |   |
| 11/27/13 - 12/6/13 |       | 25,000           |       | $                     | 8.33       |                                | $          | 5.24                               |       | $                         | 1.61       |             | $          | 15.18                 |       | 6,400                              |       | $                         | 3.58       |                       | $          | 1.61                                   |       | $ | 5.19 |   | 32,000 |   | $ | 13.18 |   |

 

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4.               This First Amendmentis intended to modify the Lease and shall be deemed to amend any language inthe Lease which is read or interpreted contrary to the provisions set forthherein.  Any covenant or provision of theLease which is not inconsistent with this First Amendment shall remain in fullforce and effect.

5.               This First Amendmentmay be executed in any number of counterparts all of which taken together shallconstitute one and the same instrument.

*[SignaturePage Follows]*

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**INWITNESS WHEREOF**, the parties have executed this First Amendmentas of the day and year first above written.
| **LANDLORD:**                                 |         |
|-----------------------------------------------|--------------|
| ** **                                    |         |   |   |   |
| ***YORK COUNTY, LLC,***                       |         |
| ***a California limited liability  company*** |         |
| *** ***                                  | *** *** | *** *** | *** *** | *** *** |
| By:                                           |         | Panattoni Investments, LLC, |   |
|                                          |         | a California limited liability company, |   |
|                                          |         | Managing Member |   |
|                                          |         |   |   |   |
|                                          |         | By: |   |   |
|                                          |         |   | Carl D. Panattoni, Trustee of the Panattoni |   |
|                                          |         |   | Living Trust, Dated April 8, 1998, |   |
|                                          |         |   | Managing Member |   |
|                                          |         |   |   |   |
| **TENANT:**                                   |         |   |
| ** **                                    | ** **   | ** ** | ** ** | ** ** |
| ***CORGENIX MEDICAL CORPORATION,***           |         |
| ***a Nevada corporation***                    |         |
| *** ***                                  | *** *** | *** *** | *** *** | *** *** |
| By:                                           |         | /s/ Douglass T. Simpson |   |
| Name:                                         |         | Douglas T. Simpson |   |
| Its:                                          |         | President & CEO |   |
|                                               |              |  |  |  |  |  |  |  |  |  |

** **

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