LUMINEX CORPORATION AMENDMENT TO RESTRICTED STOCK AGREEMENT

Exhibit 10.1

LUMINEX CORPORATION

AMENDMENT TO RESTRICTED STOCK AGREEMENT

      THIS AMENDMENT TO RESTRICTED STOCK AGREEMENT is made by and between Patrick J. Balthrop, Sr. (the “Executive”) and Luminex Corporation, a Delaware corporation (the “Company”) effective as of March 25, 2007. Capitalized terms used, but not defined herein, shall have the meanings assigned to such in the Agreement (as defined below).

WITNESSETH:

      WHEREAS, the Company entered into a Restricted Stock Agreement (the “Agreement”) with the Executive dated as of May 17, 2004, which Agreement was issued under the Company’s 2000 Long-Term Incentive Plan; and

      WHEREAS, the Company and the Executive desire to amend the Agreement such that the Restrictions, to the extent not then lapsed, will lapse with respect to all of the Restricted Shares on the date immediately prior to the fifth anniversary of the date of the Agreement.

      NOW, THEREFORE, for good and valuable cons