The FDA has different reporting routes for different problems. Choosing the right one is more useful than calling every submission an “MDR complaint”.
Choose the route
| Situation | Route | Who uses it |
|---|---|---|
| Adverse event, malfunction, product-quality problem, or use error | MedWatch voluntary reporting | Patients, consumers, and health professionals |
| Suspected unlawful marketing, failure to register or list, quality-system concern, or other regulatory misconduct | CDRH allegation of regulatory misconduct | Anyone |
| Legally required death, serious-injury, or malfunction report under 21 CFR Part 803 | Medical Device Reporting | Manufacturers, importers, and device user facilities according to their duties |
Patients and individual health professionals generally use MedWatch voluntarily. Do not use a mandatory industry form merely because the acronym “MDR” appears in the product area.
For an emergency, use emergency services. MedWatch and CDRH allegations do not provide medical advice.
Route 1: MedWatch for an event or product problem
The FDA accepts online voluntary reports. Health professionals can use Form FDA 3500, while the consumer-friendly Form 3500B is designed for patients and consumers.
Useful information includes:
- what happened and when;
- the patient outcome, without unnecessary identifying details;
- device brand, common name, model, lot, serial number, and UDI if available;
- manufacturer details;
- whether the device was implanted, explanted, serviced, or reprocessed where relevant;
- photographs, labelling, instructions, purchase records, or other supporting material; and
- contact information if you want the FDA to ask follow-up questions.
The Form 3500 instructions say a reporter’s identity may be shared with the manufacturer for timely follow-up in serious cases unless the reporter specifically requests otherwise in the form’s confidentiality field. Read the current form before submitting.
Route 2: CDRH allegation for suspected misconduct
CDRH defines an allegation as a claim that a manufacturer or person marketing a device may be violating the law. Its examples include:
- promoting a device outside cleared or approved indications;
- marketing without appropriate clearance or approval;
- failing to register and list a device;
- failing to follow quality-system responsibilities;
- failing to submit required safety reports; and
- falsifying documents or deceiving the FDA.
The FDA asks for the company, device, identifiers, a detailed description, and supporting documents. Anyone may file, including anonymously. When contact details are provided, CDRH says it sends an acknowledgement with an FDA reference number.
CDRH reviews allegations according to potential patient risk and completeness. It may investigate further and may take action, but the FDA publishes no universal response deadline and does not promise an inspection, warning letter, recall, or other outcome for an individual submission.
Do not infer approval from registration
FDA establishment registration and device listing are not approval, clearance, or authorisation. The FDA states this directly in its guide to “FDA registered” and “FDA certified” claims.
Likewise, device class alone does not prove the required premarket pathway. Some devices are exempt from premarket notification. Others may use 510(k), De Novo, PMA, a humanitarian device exemption, or another route depending on classification and regulation. Verify the product code, classification regulation, and public FDA record before alleging that a submission is missing.
Use the current quality-system rule
On 2 February 2026, the FDA’s Quality Management System Regulation became effective. It amended 21 CFR Part 820 and incorporates ISO 13485:2016 by reference, with additional FDA requirements.
Older articles that describe the pre-2026 Quality System Regulation as the current framework are stale. If the concern involves design, production, complaint files, corrective action, records, or supplier controls, identify the date of the conduct and use the rule applicable at that time.
Build an evidence packet
Separate four things:
- Observation: the exact label, advertisement, output, malfunction, or event.
- Source: URL, screenshot, device record, photograph, or document with a date.
- Regulatory question: the requirement you think may apply.
- Unknown: facts that only the company or FDA may be able to establish.
Use neutral language. “The public listing states X, while the FDA database search on this date returned Y” is more useful than “the company is committing fraud.”
Preserve full-page screenshots, the URL, access date, model and version, and any UDI. Do not alter original evidence. If a patient is involved, avoid unnecessary protected health information.
After submission
Keep the confirmation and reference number. Send additional evidence through the contact method associated with the same record. Avoid creating duplicate reports unless the FDA instructs you to do so.
A report can contribute to surveillance and enforcement, but it does not prove a violation and does not guarantee an investigation. Warning letters, recalls, inspections, and other actions are published through separate FDA systems when the agency takes them.
MD Watchdog can collect and structure a concern, but sign-in is required and no reviewer, filing, timetable, or authority outcome is guaranteed. You can also report directly to the FDA using the official routes above.
Last checked against FDA public sources on 29 July 2026. This guide is general information and has not been approved by a lawyer or regulatory professional.