Date:    1/04/02

To:       Valued Clients

From:   Andrea Cortese Hassett, Ph.D.

Effective 1/7/02, the following tests will be performed every two weeks on Monday.

557C            Hepatitis B DNA PCR (Plasma)
557D            Hepatitis B DNA PCR (Liver tissue)
543G            Hepatitis B DNA Quantitative

This change is necessitated by a decrease in the volume of testing.

If you have any questions or concerns, please do not hesitate to call me.