Overview
- 3 inspections across 3 sites are on record.
- 0 Form 483 observations are attributed to this investigator.
- Most recent recorded activity is 2025-10-28.
At a glance
Inspections
3
Sites
3
Observations
0
Career since
Sep 2021
Recent inspections
Most recent inspections in the published record.
| Site | Date | Category | Form 483 |
|---|---|---|---|
| Lonza AG | 28 Oct 2025 | Human Drugs | On file |
| Alvotech HF | 17 Mar 2023 | Human Drugs | On file |
| PharmaEssentia Corporation, Taichung Plant | 28 Sep 2021 | Human Drugs | On file |
Sites inspected
Lonza AGVisp, Switzerland1 insp.
Alvotech HFReykjavik, Iceland1 insp.
PharmaEssentia Corporation, Taichung PlantTaichung, Taiwan1 insp.
Co-investigators
Investigators who share inspections with this person.
Richard Ledwidge2 shared
Alexander R Sohr1 shared
Ralph M Bernstein1 shared
Reyes Candau-Chacon1 shared
Arsen Karapetyan1 shared
Full investigator report
Get the verbatim findings behind Lei Zhang's inspection record
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