CLASS II Device recall · Reported 3 Jan 2024 · FDA Enforcement Report

microSTARii reader, Medical Dosimetry System recalled by Landauer

Landauer is recalling microSTARii reader, Medical Dosimetry System. The recall was initiated on 15 Nov 2023 and the FDA has classified it as Class II.

Check your package

Lot, batch or date codesAll serial numbers.
Quantity recalled584 units

Stop using the device if the notice says to, and contact the manufacturer or your healthcare provider for the correction or replacement.

Recall details

Recall number
Z-0616-2024
FDA event ID
93524
Recalling firm
Landauer, Glenwood, IL
Classification
Class II
Status
Completed
Recall initiated
15 Nov 2023
FDA classified
22 Dec 2023
Reported
3 Jan 2024
Type
Voluntary: Firm initiated
Customers notified by
E-Mail
Reason category
Device Malfunction

Timeline

15 Nov 2023Recall initiated by company
22 Dec 2023Classified by FDA+37 days
3 Jan 2024Published in enforcement report+12 days

Companies usually start a recall weeks before the FDA classifies and publishes it; the gap above is that lag.

Reason for recall

MicroSTARii readers may be contributing to the nanodot dosimeter measurement inaccuracy in two possible ways. The first is related to the interaction of the reader s LED beam profile with the nanoDot dosimeter. The second is debris formation due to drawer actuation, resulting in a change of reader response that may not be detectable unless known dose QCs are being run regularly.

Device recalls are issued when a component, software or design fault could cause the device to fail or give wrong readings. Many are corrections applied in the field rather than physical returns.

Product as listed by the FDA

Landauer microSTARii reader, Medical Dosimetry System, Model Numbers: 18000-000/18001-000/18007-000

Where it was distributed

US and Australia, Brazil, Canada, China, France, Germany, India, Japan, Mexico, Rep of Korea, Taiwan, Thailand, Viet Nam

Questions about this recall

Why was it recalled?

MicroSTARii readers may be contributing to the nanodot dosimeter measurement inaccuracy in two possible ways. The first is related to the interaction of the reader s LED beam profile with the nanoDot dosimeter. The second is debris formation due to drawer actuation, resulting in a change of reader response that may not be detectable unless known dose QCs are being run regularly.

Which lots are affected?

All serial numbers.

Where was it sold?

US and Australia, Brazil, Canada, China, France, Germany, India, Japan, Mexico, Rep of Korea, Taiwan, Thailand, Viet Nam

What should I do if I have it?

Stop using the device if the notice says to, and contact the manufacturer or your healthcare provider for the correction or replacement.

What does Class II mean?

Class II means the product may cause temporary or medically reversible health problems, or the probability of serious harm is remote.

Read the official FDA notice · Source record retrieved 26 Sep 2026. The FDA describes openFDA data as unvalidated; the official notice takes precedence. This page reports the record and gives no medical advice.

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