The Nucleic acid amplification techniques page has been updated with additional information about the utility of polymerase chain reaction followed by electrospray ionization- mass spectrometry (PCR/ESI-MS) in the diagnosis of infection.
Vincent, JL, Brealey, D, Libert, N, et al. Rapid Diagnosis of Infection in the Critically Ill, a Multicenter Study of Molecular Detection in Bloodstream Infections, Pneumonia, and Sterile Site Infections. Crit Care Med 2015 http://www.ncbi.nlm.nih.gov/pubmed/26327198.