QIAGEN Inc. Invites You to Join Its First Quarter 2007 Earnings Conference Call on the Web

VENLO, Netherlands, May 2 /PRNewswire-FirstCall/ -- In conjunction with QIAGEN’s First Quarter 2007 Earnings release, you are invited to listen to its conference call which will be broadcast live over the Internet on Tuesday, May 8, 2007 at 9:30 a.m. ET, with Peer M. Schatz, President and Chief Executive Officer and Roland Sackers, Chief Financial Officer.

What: QIAGEN N.V. - First Quarter 2007 Earnings Announcement When: Tuesday, May 8, 2007 at 9:30 a.m. ET Where: http://www.QIAGEN.com/goto/080507 How: Live over the Internet -- Simply log on to the Web at the address above. The corresponding presentation slides are available to download in the investor relations section of QIAGEN’s website at: www.QIAGEN.com/goto/080507 Contact: Andreas Marathovouniotis, Russo Partners, 212-845-4253

QIAGEN N.V., a Netherlands holding company, is a leading provider of innovative technologies and products for pre-analytical sample preparation and molecular diagnostics solutions. QIAGEN has developed a comprehensive portfolio of more than 500 proprietary, consumable products and automated solutions for sample collection, and nucleic acid and protein handling, separation, and purification. QIAGEN also supplies diagnostic kits, tests, and assays for human and veterinary molecular diagnostics. The company’s products are sold to academic research markets, and to leading pharmaceutical and biotechnology companies; as well as to diagnostics laboratories. QIAGEN also provides purification and testing solutions to applied testing markets: such as forensics, animal or food testing, and pharmaceutical process control.

QIAGEN employs more than 1,900 people worldwide. QIAGEN products are sold through a dedicated sales force and a global network of distributors in more than 40 countries.

Further information about QIAGEN can be found at www.qiagen.com

(Minimum Requirements to listen to broadcast: The RealPlayer software, downloadable free from http://www.real.com/products/player/index.html, or The Windows Media Player, downloadable free from www.microsoft.com and at least a 14.4Kbps connection to the Internet. If you experience problems listening to the broadcast, send an email to webmaster@vdat.com.)

QIAGEN N.V.

CONTACT: Andreas Marathovouniotis, Russo Partners, +1-212-845-4253, forQIAGEN N.V.

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