This story has been updated with comments from outside researchers and clinicians.

LC-MS-based proteomics has officially entered the clinic with the launch this week of Integrated Diagnostics' Xpresys Lung test.

Intended to aid doctors in identifying lung nodules detected via CT scans as likely benign, Xpresys uses multiple-reaction monitoring mass spec to quantify the levels of 11 proteins in patient blood samples.

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 Senator Lamar Alexander (R-Tenn.), who chairs the Senate health committee, will be retiring at the end of his term, Stat News reports.

UCSF researchers find that having two X chromosomes may contribute to women's longer lifespans, according to Discover's D-brief blog.

The Wall Street Journal reports on the US Centers for Disease Control and Prevention's use of genetic approaches to study foodborne illnesses.

In PNAS this week: immune cell profiling of wild baboons by social status, metabolomics profiling of esophageal tumors, and more.