Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT

Company	State or Country of Organization
Pacific Biotech, Inc.	California
Metra Biosystems, Inc.	California
Osteo Sciences Corporation	Oregon
Litmus Concepts, Inc.	California
Diagnostic Hybrids, Inc.	Ohio
Quidel International, LLC	Delaware
Quidel Germany, GmbH	Germany
Quidel China, Ltd.	China