api5000AB Sciex API 5000 Triple Quad LCMS. The AB Sciex API 5000 Triple Quad LCMS is a cutting-edge mass spectrometer desned for laboratories that demand superior sensitivityDesned to deliver the lowest limits of detection for the most demanding DMPK and ADME studies, the API 5000 System combines new QJet™ Ion Guide technology with the proven Turbo V™ Ion Source and a powerful