Overview
- 316 inspections across 230 sites are on record.
- 245 Form 483 observations are attributed to this investigator.
- Most recent recorded activity is 2026-06-30.
At a glance
Inspections
316
Sites
230
Observations
245
Career since
Dec 2010
Recent inspections
Most recent inspections in the published record.
| Site | Date | Category | Form 483 |
|---|---|---|---|
| Emergent Biodefense Operations Lansing LLC | 30 Jun 2026 | Biologics | View 483 → |
| American National Red Cross Southeastern Michigan Region | 10 Jun 2026 | Biologics | |
| The American National Red Cross | 5 May 2026 | Biologics | |
| DONOVIVO, LLC | 29 Apr 2026 | Biologics | View 483 → |
| Innovative Research, Inc. | 29 Apr 2026 | Biologics |
Sites inspected
Emergent Biodefense Operations Lansing LLCLansing, United States1 insp.
American National Red Cross Southeastern Michigan RegionAnn Arbor, United States1 insp.
The American National Red CrossFlint, United States1 insp.
DONOVIVO, LLCNovi, United States1 insp.
Innovative Research, Inc.Novi, United States1 insp.
Co-investigators
Investigators who share inspections with this person.
Erma Zaimova12 shared
Lesley Mae P Lutao7 shared
Jennifer A Kemp7 shared
Margaret N Persich6 shared
Emily B Camire5 shared
Tracey L Siebesma4 shared
Zoey A Trombley3 shared
Gabryelle J Solverud3 shared
Barbara A Rusin3 shared
Victoria A Murray3 shared
Full investigator report
Get the verbatim findings behind Matthew J Gretkierewicz's 245 observations
Source 483 PDFs, verbatim observations, and how each site responded, so your team knows what they cite before they arrive.
- New inspections and Form 483s, mapped to the CFR citation
- Warning letter outcomes, and the citation patterns they repeat
- Their co-investigators, so no surprises about who shows up on site