UPDATE 1-Affymetrix says FDA allows emergency use of flu test

* TessArae's flu test uses Affymetrix's technology

* Affymetrix shares rise as much as 8 pct

Dec 21 (Reuters) - Affymetrix Inc (AFFX.O) said U.S. health regulators granted emergency use authorization to a flu test developed by privately held TessArae LLC, using Affymetrix's technology, to detect H1N1 influenza A virus.

The TessArray RM-Flu test is performed on throat swabs taken from patients with symptoms of respiratory infection, the companies said in a statement.

The declaration of emergency will expire on April 26, 2010, unless terminated earlier or renewed, the companies said.

Shares of Affymetrix, which makes arrays to analyze genetic data, were up 3 percent to $5.71 in morning trade on Nasdaq. They touched a high of $5.97 earlier in the session.

(Reporting by Shailesh Kuber in Bangalore; Editing by Aradhana Aravindan)