REFERENCE RANGE:  < 1:8

INTERPRETIVE CRITERIA:

                < 1:8                       Antibody Not Detected

                > or = 1:8               Antibody Detected

Single titers > or = 1:64 are indicative of recent infection.  

Titers of 1:8 to 1:32 may be indicative of either past or

recent infection, since CF antibody levels persist for only

a few months.  A four-fold or greater increase in titer between

acute and convalescent specimens confirms the diagnosis.  After

initial infection, antibody responses at a later date are often

heterotypic and exhibit crossreactivity with other paramyxoviruses

(e.g., mumps).

This test was developed and its performance characteristics

have been determined by Focus Diagnostics. Performance

characteristics refer to the analytical performance of the test.

Test Performed by

Focus Diagnostics, Inc.

5785 Corporate Avenue

Cypress, CA   90630-4750