LANDAUER microSTAR® ii Dosimetry SystemRecalls & reported problems

Summary

No MAUDE adverse event reports in our data reference this device identifier directly.

38 FDA recall records name this device's identifier.

Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event, and counts can't be used to compare devices or estimate failure rates. What reports can and can't tell you · How this data works · Data updated Oct 18, 2026.

Recalls naming this device

1. Jul 12, 2023Class IICompleted

   LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

   Z-2553-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

2. Jul 12, 2023Class IICompleted

   LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

   Z-2539-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

3. Jul 12, 2023Class IICompleted

   LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

   Z-2565-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

4. Jul 12, 2023Class IICompleted

   LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

   Z-2549-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

5. Jul 12, 2023Class IICompleted

   LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

   Z-2541-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

6. Jul 12, 2023Class IICompleted

   LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

   Z-2546-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

7. Jul 12, 2023Class IICompleted

   LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

   Z-2547-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

8. Jul 12, 2023Class IICompleted

   LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

   Z-2571-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

9. Jul 12, 2023Class IICompleted

   LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

   Z-2562-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

10. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2570-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

11. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2540-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

12. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2560-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

13. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2559-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

14. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2563-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

15. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2551-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

16. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2544-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

17. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2575-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

18. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2572-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

19. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2557-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

20. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2543-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

21. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2569-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

22. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2564-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

23. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2545-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

24. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2566-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

25. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2558-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

26. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2552-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

27. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2556-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

28. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2574-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

29. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2568-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

30. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2550-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

31. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2554-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

32. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2567-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

33. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2548-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

34. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2573-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

35. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2538-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

36. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2561-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

37. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2542-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗

38. Jul 12, 2023Class IICompleted

    LANDAUER received reports indicating that some nanoDots may potentially be outside of the specified range of +/-5.5% accuracy. Investigation of nanoDots indicated the presence of a potential non-conformance in the Optical Stimulated Luminescence (OSL) material that is beamed after exposure and emits fluorescence proportional to radiation exposure.

    Z-2555-2023 · Root cause: Under Investigation by firm · Recall details · FDA record ↗