CBMX Combimatrix Corp. (MM)

CombiMatrix Corporation (Nasdaq:CBMX) announced today that it will release its first quarter 2013 financial results on Wednesday, May 8, 2013. Results will be released prior to trading on that day.

A conference call has also been scheduled regarding CombiMatrix Corporation's first quarter 2013 financial results. The presentation and Q&A session will start at 8:00 a.m. Pacific Time (11:00 a.m. Eastern) on May 8, 2013.

To attend the presentation by phone, dial 1-888-438-5491 for domestic callers and 1-719-457-2085 for direct-dial or international callers. To listen to the call via CombiMatrix's website, go to www.combimatrix.com in the Investor/Events section (http://investor.combimatrix.com/events.cfm).

A replay of the presentation will be available following the presentation, either via the CombiMatrix website Investor/Events section (http://investor.combimatrix.com/events.cfm) or by dialing 1-877-870-5176 for domestic callers or 1-858-384-5517 for direct-dial international callers. When prompted, enter playback pin number 6725021.

About CombiMatrix Corporation

CombiMatrix Corporation, through its wholly owned subsidiary, CombiMatrix Molecular Diagnostics, Inc. (CMDX), is a molecular diagnostics laboratory which offers DNA-based testing services to the prenatal, pediatric and oncology markets. The Company performs genetic testing utilizing Microarray, FISH, PCR and G-Band Chromosome Analysis. CMDX offers prenatal and pediatric testing services for the detection of abnormalities of genes at the DNA level beyond what can be identified through traditional technologies. Additional information about CMDX is available at www.cmdiagnostics.com or by calling 1-800-710-0624.

CONTACT: Company Contact:
         Mark McDonough
         President & CEO, CombiMatrix Corporation 
         Tel (949) 753-0624

         Media Contact:
         Len Hall
         VP, Media Relations
         Allen & Caron
         Tel (949) 474-4300
         len@allencaron.com

         Investor Relations Contact:
         John Baldissera
         BPC Financial Marketing
         Tel (800) 368-1217