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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