FDA Investigator

Jason K Loo

Latest inspection on record: Novato, United States, July 2025 · records back to 2024

Human Drugs

FDA inspection record · Last updated July 12, 2026

Overview

  • 8 inspections across 8 sites are on record.
  • 24 Form 483 observations are attributed to this investigator.
  • Most recent recorded activity is 2025-07-17.

At a glance

Inspections

8

Sites

8

Observations

24

Career since

Oct 2024

Recent inspections

Most recent inspections in the published record.

SiteDateCategoryForm 483
Ultragenyx Pharmaceutical Inc.17 Jul 2025Human Drugs
Cardinal Health 414, Inc.13 Jun 2025Human DrugsOn file
Northwest Cosmetic Laboratories LLC3 Jun 2025Human DrugsOn file
Rigel Pharmaceuticals, Inc.28 Mar 2025Human Drugs
Infinity Labs SD, Inc25 Mar 2025Human DrugsOn file

Sites inspected

Ultragenyx Pharmaceutical Inc.Novato, United States1 insp.
Cardinal Health 414, Inc.Seattle, United States1 insp.
Northwest Cosmetic Laboratories LLCIdaho Falls, United States1 insp.
Rigel Pharmaceuticals, Inc.South San Francisco, United States1 insp.
Infinity Labs SD, IncPetaluma, United States1 insp.

Co-investigators

Investigators who share inspections with this person.

Darren S Brown2 shared
Navneet Kaur1 shared
Lena Nguyen1 shared
Michael Araneta1 shared

Full investigator report

Get the verbatim findings behind Jason K Loo's 24 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

Related investigators