# Marcus Research Laboratory, Inc. – FDA 483, May 6, 2026

Source: https://www.keypedia.com/records/483/marcus-research-laboratory-inc/846aed50-4574-4cbf-afaa-e454fa2df5e3

> FDA 483 for Marcus Research Laboratory, Inc. on May 06, 2026. Product: drugs. Access full analysis and detailed observations.

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## Details

- Record Type: 483
- Company Name: Marcus Research Laboratory, Inc.
- Inspection Date: 2026-05-06
- Product Type: drugs
- Office Name: Division of Human and Animal Food Operations - West II
- Summary: Maroon Research Laboratory, Inc., an API manufacturer in Saint Louis, MO, was cited for inadequate systems for maintaining and calibrating critical equipment. Specifically, a mixer's ribbon blade, used for manufacturing all API lots, was found to be in a state of disrepair. This condition raises concerns about the quality and integrity of distributed human and animal drug APIs.

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## Related Officers

- [Matthew M. Schuckmann](https://www.keypedia.com/people/matthew-m-schuckmann/69dd0728-6b5d-41e7-834c-416e25a977dc)

Company: https://www.keypedia.com/companies/marcus-research-laboratory-inc/6ed62b27-3200-4374-b004-ec4c541dc0d9

Office: https://www.keypedia.com/offices/division-of-human-and-animal-food-operations-west-ii/8851d151-0390-4d17-be66-fd86d12aa6b8