Of the 30 companies in the index, 20 saw their share prices decline, while four saw their stock prices rise and two were flat month over month.
The HRSA screening guidelines now recommend use of either clinician-collected or patient-collected samples for human papillomavirus testing.
The organization updated its guidelines to account for changes in the illegal drug supply as well as advances in technologies used for drug detection.
The rapid molecular chlamydia and gonorrhea self-test provides results in 30 minutes from a self-collected swab sample, the firm said.
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