Recall

Class II — Ab Sciex

Recalling firm	AB SCIEX
Registered facility	AB SCIEX LP (the firm's only registered facility)
Classification	Class II
Status	Terminated
Reason	MultiQuant MD software where under certain conditions a user can be presented with incorrect quantitative results when using the Sum Multiple Ions feature.
Product	AB SCIEX Triple Quad 4500MD LC/MS/MS System. Mass Spectrometer for In-Vitro Diagnostic Use. Instrument Part Number (REF): 5031257 3200MD series and 4500MD series are mass spectrometers intended to identify inorganic or organic compounds (e.g., lead, mercury, and drugs) in human specimens by ionizing the compound under investigation and separating the resulting ions by means of an electrical and magnetic field according to their mass. It is intended for in vitro diagnostic purposes. For in vitro diagnostic use.
Quantity	121 units
Distribution	Worldwide Distribution - US (Nationwide) Internationally to Canada, Austria, China, Netherlands, Norway, India, Korea, Germany, France, Switzerland, Ireland, Italy, Singapore, Russia, UK, Malaysia,
Initiated	2016-06-16
Classified	2016-08-12
Terminated	2017-03-02
Recall number	Z-2528-2016
Initiation	Voluntary: Firm initiated

Source: U.S. FDA via openFDA (opens in a new tab) (device registration & enforcement). Data as of 2026-10-06. Verify this recall record at FDA → (opens in a new tab)

Cite this record

RegWarden. “Class II recall — Ab Sciex (Z-2528-2016).” Compiled from U.S. FDA public records (openFDA; FDA Data Dashboard). Data as of 2026-10-06. https://regwarden.com/recall/74520/

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