For Medical Device Firms

FDA 483 / Warning Letter Response.
30-Day Package.

Just inspected by FDA? A structured 30-day engagement that delivers your formal written response on or before the 15-business-day deadline — drafted to FDA expectations, with a CAPA plan against every cited observation, and a senior QA engineer (ISO 13485 / 21 CFR Part 820 lead) leading the work.

Who It's For

Built for small / mid medical device firms in crisis mode

If you've just been inspected by FDA and the response deadline is staring at you, this engagement is structured for exactly that situation.

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Just-Inspected Device Firms

Recently received a Form 483 with observations. Need a written response submitted to FDA within the standard 15-business-day window.

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Warning Letter Recipients

Issued a Warning Letter and need a formal response strategy backed by senior QA judgment. Higher-stakes than a 483; same response framework.

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No In-House Reg. Affairs

10–200 employee device firms whose Quality VP just left, was let go pre-inspection, or never existed. No internal capacity to draft a defensible response.

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AI-Overreliance Citations

Cited under 21 CFR 211.22(c) for AI-generated SOPs, specs, CAPAs, or production records that bypassed Quality Unit review. Response scoped to the Purolea (320-26-58) standard.

Post-Purolea Enforcement Reality

If your 483 cites AI-generated documents, read this.

On April 2, 2026, FDA issued Warning Letter 320-26-58 to Purolea Cosmetics Lab — the first cGMP enforcement action explicitly citing AI overreliance as a distinct, named violation. FDA invoked 21 CFR 211.22(c) against AI-generated drug specs, SOPs, and master production and control records that entered the QMS without Quality Unit review. Every regulated firm using AI in GxP documentation now operates under that template.

FDA's verbatim remediation standard: "Any output or recommendations from an AI agent must be reviewed and cleared by an authorized human representative of your firm's QU in accordance with section 501(a)(2)(B) of the FD&C Act." If your inspection touched AI-assisted SOPs, CAPAs, validation protocols, design controls, supplier responses, or production records, the response must demonstrate that the QU oversight gap is closed — not just promised.

This 30-day response engagement covers the fact pattern directly: retroactive QU-review evidence assessment across AI-touched documents, SOP for authorized-reviewer-by-document-type, audit-trail design that survives an investigator's request, and a remediation roadmap that maps to the verbatim FDA standard above. The engineer signing the response is the same person reviewing the work — no AI substitution in the deliverable that defends you against AI substitution.

📧 Inquire About AI-Overreliance Response
The 30-Day Engagement

Day-by-day timeline

Engagement scoped to land your formal response on or before the 15-business-day FDA deadline, with remediation continuing through day 30 and beyond if retainer is engaged.

1
DAYS 1–2

Initial Review

Review the 483 / Warning Letter findings within 48 hours of engagement. Identify scope, severity, and any observations that require immediate action.

2
DAYS 3–8

CAPA Plan + Draft

Build the CAPA (Corrective and Preventive Action) plan covering every cited observation. Draft the formal written response in standard FDA format.

3
DAYS 9–12

Mock-Audit / Readback

One mock-audit / readback session before submission. Pressure-test the response with someone who's been on the inspector's side. Adjust before submission.

4
DAYS 13–15

Submission

Final response submitted on or before the FDA deadline (15 business days from 483 issue date, or as specified on Warning Letter). Implementation roadmap with deadlines included.

Pricing

Fixed price. Deadline-driven. Optional retainer.

The 30-day response package is the primary engagement. The monthly retainer continues remediation oversight and prepares you for follow-up inspection.

Remediation Retainer (Optional)

Post-submission, ongoing remediation.
Monthly Retainer
Quote provided after response delivery · cancel anytime after 90 days
  • CAPA closure tracking against the response commitments
  • Monthly remediation status reports for executive readout
  • Pre-followup-inspection prep (mock audits, document review)
  • Available for live questions during follow-up FDA inspection
  • QMS gap remediation — closing the systemic issues underlying the 483
Inquire About Retainer →
Out of Scope

What's NOT included

Honest scope. If your situation requires one of these, I'll refer you to qualified specialists.

Out of scope for the 30-day response package

  • Lab testing or analytical work. Where 483 observations require analytical confirmation, I refer to qualified third-party labs and incorporate their results into the response.
  • Recall execution. If a recall is required as part of remediation, that's a separate engagement (or referral to specialized recall firms).
  • Litigation defense. If the 483 / Warning Letter triggers civil or criminal exposure, work alongside specialized FDA enforcement counsel — I do not provide legal opinion.
  • 510(k) or PMA submissions. Premarket submission work is separately scoped.
  • Consent decree negotiations. If FDA escalates beyond Warning Letter to consent decree, retain specialized FDA enforcement counsel for the negotiation; I support the QA-engineering side of the response.
Who Drafts the Response

Senior QA leading the work. No junior drafter.

One person owns the response from intake to submission. The signature on the document is the engineer who wrote it.

MM
About the Practitioner
Mark Mayeux
Quality Engineer · QESaaS

Twenty-plus years in product quality engineering across medical devices, aerospace, and consumer goods. Director of Quality at Anatomy Supply Partners (2012–2015) — US/China medical device sourcing company. Built the in-house Device Specification / FDA Regulatory team from scratch, ran 21 CFR Part 820 design control across US engineering and China manufacturing, and built a 21 CFR Part 11 compliant SharePoint Stage Gate system covering DHF / DMR / DHR records.

Director of Quality at Scotsman Ice Systems (Ali Group subsidiary, 2016–2017) — passed major ISO 9001:2015 certification audit, multiple UL and FDA audits, plus customer-led audits from McDonald's, GE, and Viking. Earlier in career: built the entire quality department at a medical equipment startup from scratch, including all agency documentation and supplier quality requirements; the company was later acquired by a larger company.

21 CFR Part 82021 CFR Part 11ISO 13485ISO 9001 / 14001cGMPDesign Controls (DHF / DMR / DHR)CAPA & Risk ManagementMed Equipment Startup → Acquisition
Common Questions

Before you engage

How fast can you start?

Initial intake within 24 hours of inquiry. The 30-day timeline begins on engagement start date — typically same-day or next-day after first call. If your 15-business-day deadline is already underway, we adjust the timeline to fit what's left.

What if my response deadline is less than 15 business days away?

Compressed-timeline engagements are accommodated. Rate may adjust for expedited turnaround. If the deadline is less than 5 business days away, I'll tell you on the first call whether a quality response is achievable in the remaining time.

Will FDA accept a response drafted by an outside engineer?

Yes. FDA cares about the substance and credibility of the response, not who drafted it. The response is submitted on your firm's letterhead, signed by your responsible person. My role is engineering judgment and document drafting — your firm owns the submission.

Can you sign an NDA?

Yes. A mutual NDA can be executed before any 483 / Warning Letter content is shared. Standard one-page template available; custom NDAs accommodated.

What if FDA escalates to a follow-up inspection?

If the optional monthly retainer is engaged, I provide pre-inspection mock audits and am available by phone during the follow-up inspection. If the retainer is not engaged, follow-up inspection support is scoped separately.

What if my situation is more complex than a standard 483 response?

If the Warning Letter or 483 involves consent decree exposure, parallel litigation, recall execution, or 510(k) issues, I'll tell you on the first call which parts of the response I can own and which require specialized counsel. The 30-day package is for standard 483 / Warning Letter responses; complex situations are scoped separately.

Start the response

If your 15-business-day deadline is running, every day matters. Email for fastest intake — response within 24 hours, engagement start same- or next-day. Calendar booking available for non-urgent intake.