luminexcorp.com .

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August-Wilhelm Scheer. In
addition , investors may listen to the call via a taped replay by dialing
888-286-8010 for domestic callers and 617-801-6888 for international
callers using the pass code 35370196.

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----IDS Scheer, the leading provider of business process excellence
services and tools, today announced at SAPPHIRE '05, an alliance with
Corticon(R) Technologies, a leading provider of business rules
management systems. "Corticon provides the industry's first business rules modeling
solution, and addresses an important need of our customers.

(NASDAQ: PRAA), a company that purchases, collects and manages portfolios of
defaulted consumer receivables, will announce its Fourth Quarter 2004
results on February 22 , 2005.219.

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Effectively, modeling your business
process and modeling your business rules is a critical step. Similarly, Corticon Business
Rules Management enables organizations to design, implement and
execute the control points within business processes, where business
policy is applied.com

About IDS Scheer in North America

IDS Scheer is the leading provider of solutions for business
process excellence.ids-scheer.
Note to Editors: When referring to ARIS, please print in all caps . The defaulted consumer receivables Portfolio Recovery
Associates collects are generally either purchased from sellers of
defaulted consumer debt or are collected on behalf of debt owners on a
commission basis.

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From small/medium enterprises to Global 1000
organizations, IDS Scheer provides a wide array of solutions to help
customers optimize, and profit from, their investments in Supply Chain
Management (SCM), Customer Relationship Management (CRM), Enterprise
Resource Planning (ERP), and Next Generation Business Process
Automation solutions. Portfolio Recovery Associates
purchases, collects and manages portfolios of defaulted consumer
receivables and provides collateral location services for credit
originators. Click on the
Investor Relations link and follow the instructions.

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The integrated
products are available immediately from both Corticon and IDS Scheer.
Under this collaboration , ARIS Process Platform users will be able
to simplify process models by extracting decision rules and modeling
them in separate diagrams. Mark Allen,
co-founder and CEO of Corticon Technologies ."
At IDS Scheer's recent ProcessWorld 05 conference, business rules
took center stage, especially during a presentation by IDS Scheer
founder Prof. As a SAP Global Services Partner, IDS Scheer
enables customers to maximize their SAP investment and build winning
businesses.com/LEHM002/033005a_cs/default .

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"
The ARIS Process Platform enables organizations to design,
implement and execute business processes .

The earnings announcement, which will be released after the market closes,
will be followed at 5:30 PM EST by a conference call with investors to
discuss the results.

Eastern Time.

Factors that could cause Luminex's actual results or performance to differ
materially include risks and uncertainties relating to, among others, market
demand and acceptance of Luminex's products , the Company's dependence on
strategic partners for development, commercialization and distribution of
products, fluctuations in quarterly results due to a lengthy and unpredictable
sales cycle , Luminex's ability to scale manufacturing operations, potential
shortages of components, competition , the timing of regulatory approvals and
any modification of the Company's operating plan in response to its ongoing
evaluation of its business, as well as the risks discussed under the heading
"Risk Factors" in Luminex's Annual Report on Form 10-K for the year ended
December 31, 2004, as filed with the Securities and Exchange Commission.8020
hcurrie@luminexcorp.

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Acknowledgement of Corticon's industry changing solution includes
Gartner's positioning of Corticon in the Leaders ' Quadrant of the
Magic Quadrant for Business Rules Engines, 2005. As part of an organization of more than 2000 employees
worldwide and over 250 in North America, IDS Scheer is built upon a
foundation of business process excellence that began when the company
was founded in 1984 by August-Wilhelm Scheer, widely recognized as a
founding father of Business Process Management.com at the
Investor Relations main page. Defaulted consumer receivables are the unpaid obligations of
individuals to credit originators, including banks, credit unions, consumer
and auto finance companies, retail merchants and other providers of goods
and services. A live
webcast can be accessed via
http://customer .

Contact: Harriss T. Currie
Vice President, Finance
Chief Financial Officer
512.com

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Through this relationship, Corticon Technologies
and IDS Scheer have integrated the market-leading ARIS Process
Platform with Corticon's Business Rules Modeling Studio, a key
component of Corticon Business Rules Management. "As we have moved to a
next generation of Business Process Management based applications,
this same principal holds true.
The
forward-looking statements in this press release are based upon
management's beliefs , assumptions and expectations of the Company's future
operations and economic performance, taking into account currently
available information. Further information on Luminex
Corporation or xMAP can be obtained on the Internet at
http://www.

Reknowned as the author of 'Starship Troopers' and 'Puppet Masters' which have both been adapted to film.

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To learn more about Corticon's products , customers, and partners,
visit us at www.

PRESS RELEASE Portfolio Recovery Associates to Announce Fourth Quarter 2004 Results on February 22 2005

The replay will be available
approximately two hours after the call ends and will remain available for
seven days.com .
Statements made in this release that express Luminex's or management's
intentions, plans, beliefs, expectations or predictions of future events are
forward-looking statements.

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Investors can access the call by dialing 800-659-2056 for domestic callers
or 617-614-2714 for international callers using the pass code 34587568. Actual events or results may differ
from those expressed or implied in any such
forward-looking statements as a result of various factors, including the
risk factors and other risks that are described from time to time in the
Company's filings with the Securities and Exchange Commission including but
not limited to its Registration Statements on Form S-1, S-3 and S-8, its
annual reports on Form 10-K, its quarterly reports on Form 10-Q, and its
current reports on Form 8-K, filed with the Securities and Exchange
Commission and available through the Company's website , which contain a
more detailed discussion of the Company's business, including risks and
uncertainties that may affect future results. Balthrop, President and Chief Executive Officer of Luminex will
be speaking to institutional investors at 4:45 p.talkpoint.luminexcorp. It is important to
note that the Company's actual results or performance could differ materially
from those anticipated or projected in such forward-looking statements.

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"IDS Scheer is the clear
leader in business process modeling and analysis, while Corticon is
the only BRMS vendor to offer business rules modeling and analysis ."

About Corticon Technologies, Inc.m.

Robert Anson Heinlein, the Dean of Science Fiction, and renouned as one of the 'Big Three' grand masters of Science Fiction (Heinlein, Asimov, and Clarke).

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corticon. For more information
on IDS Scheer in North America, visit http://www.portfoliorecovery . Forward-looking statements include
references to Portfolio Recovery Associates' presentations and web casts.

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IDS Scheer and Corticon Technologies ''Rule'' at SAPPHIRE with Collaborative Partner Agreement; Integration of ARIS Process Platform and Corticon Business Rule

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"Adding Corticon to our rapidly expanding roster of technology
integration partners is further testament to the expansion of the ARIS
Process Platform to embrace business rules management capabilities,"
said Dr. Corticon's
patent-pending BRMS delivers the industries only business rules
modeling, analysis and automation that can ensure the consistent,
efficient and reliable execution of a company's business rules and
policies. The company's ARIS-based solutions offer a
complete portfolio for "Business Process Excellence," including the
services, software and methods to address all phases of the business
process lifecycle: design , implementation, execution and continuous
improvement.

About Portfolio Recovery Associates , Inc.

Portfolio Recovery Associates is a full-service provider of outsourced
receivables management and related services. Forward-looking statements involve risks and uncertainties, some of
which are not currently known to us. Due to such uncertainties and
risks, readers are cautioned not to place undue reliance on such
forward-looking statements, which speak only as of the date hereof.

Information in this press release may be superseded by more recent
information or statements, which may be disclosed in later press releases,
subsequent filings with the Securities and Exchange Commission, or
otherwise.asp?entity=Luminex or
via the Company's website, at http://www.

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Together , the products provide the ability to
completely define both processes and policies as business-friendly
models that can be analyzed, tested and automated. He focused on the role of rules
within process variants including controlling by specific rules,
separation of rules from process models, transparency of business
rules, and most importantly the re-use of business rules. This
integration with Corticon is a logical addition to our suite of BPM
solutions and another step in enabling an efficient and effective
process-oriented enterprise management.com/us

Copyright (C) 2005 IDS Scheer All rights reserved.

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Luminex Corporation develops, manufactures and markets proprietary
biological testing technologies with applications throughout the life sciences
industry.

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Unlike competitive products that require skilled
programmers, Corticon BRMS is as easy to use as a spreadsheet, thus
empowering business users and lowering total cost of ownership.

Luminex Corporation to Present at Lehman Brothers Global Healthcare Conference

Also well known as the author of 'Stranger in a Strange Land' and the chronicles of Lazarus Long.

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Business Editors/High-Tech Editors
Sapphire 2005

BERWYN, Pa. + SAN MATEO, Calif. These statements are not statements of historical
fact. The Company's xMAP(R) system is an open-architecture, multi-analyte
technology platform that delivers fast, accurate and cost-effective bioassay
results to markets as diverse as pharmaceutical drug discovery , clinical
diagnostics and biomedical research, including the genomics and proteomics
research markets.

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"As we have learned in every generation of application development
from Cobol to client server to the Web, finding problems in
implemented projects is an order of magnitude more expensive than
finding those problems during project design," said Gartner Vice
President and Distinguished Analyst, Jim Sinur.

Corticon's Business Rules Management System (BRMS) helps
organizations eliminate their policy-execution gap; the gap between
what executives need to happen ("policy") and what actually occurs
("execution"). A replay of the webcast
will also be archived on the Company 's website for 90 days.

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Many of the world's most successful organizations rely
on Corticon-powered solutions to eliminate operational risk, reduce
operational cost, and improve operational agility .

Statements herein which are not historical, including Portfolio Recovery
Associates' or management 's intentions, hopes, beliefs, expectations,
representations, projections, plans or predictions of the future, including
statements with respect to future contribution of the IGS Nevada business
to earnings and future portfolio-purchase opportunities, are
forward-looking statements within the meaning of Section 27A of the
Securities Act of 1933, as amended, and Section 21E of the Securities
Exchange Act of 1934, as amended. The Company's xMAP technology is sold worldwide and is in
use in leading research laboratories as well as major pharmaceutical,
diagnostic and biotechnology companies. The
forward-looking statements contained herein represent the judgment of Luminex
as of the date of this press release, and Luminex expressly disclaims any
intent, obligation or undertaking to release publicly any updates or revisions
to any forward-looking statements to reflect any change in Luminex 's
expectations with regard thereto or any change in events, conditions or
circumstances on which any such statements are based.

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We
believe that this integration will strengthen our business rules
offering, bringing the benefits of integrated process and rules
modeling to our customers.
Portfolio Recovery Associates, Inc. The words "believe," "expect," "intend,"
"estimate," "anticipate ," "will," "could," "should" and similar expressions
are intended to further identify such forward -looking statements for purposes
of the Private Securities Litigation Reform Act of 1995.

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Mathias Kirchmer, CEO of IDS Scheer for the Americas and
Japan.

Investors may also listen to the conference call via web cast, both live
and archived, at the company's web site, www. The Company expressly disclaims any obligation or undertaking to
release publicly any updates or revisions to any forward -looking statements
contained herein to reflect any change in the Company's expectations with
regard thereto or to reflect any change in events, conditions or
circumstances on which any such forward -looking statements are based, in
whole or in part. AUSTIN, Texas, Luminex Corporation
(Nasdaq: LMNX) today announced it will be presenting at the Lehman Brothers
Eighth Annual Global Healthcare Conference in Miami on March 30, 2005.
Patrick J.

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Likewise, Corticon Business Rules
Management users will be able to utilize the power of ARIS to design,
implement and execute business processes .
"We are pleased to partner with IDS Scheer since there are so many
market synergies between our two companies," said Dr.