Device Master Record (DMR)
Quick facts
| Category | Medical device manufacturing specification record |
|---|---|
| Used by | Medical device manufacturing |
| Also called | DMR |
| Related standards | FDA 21 CFR Part 820, ISO 13485, QMSR |
| Related processes | Bill of materials, product design controls, device history record, work order management |
| Semantic match | Device Master Record, DMR, medical device manufacturing blueprint, production specifications |
What is Device Master Record (DMR)?
A DMR compiles everything needed to manufacture a device consistently: specifications, drawings, formulations, production process instructions, quality assurance procedures, packaging and labeling requirements, and installation or servicing procedures where applicable.
While the DHF captures the design and development history and the DHR proves what was actually produced, the DMR represents the approved, standardized "how to build it" reference that production teams follow for every unit, ensuring devices are manufactured identically regardless of when or by whom they are produced.
Under FDA's newer QMSR framework, effective February 2026, the specific DMR terminology and its dedicated regulatory citation have been removed, with the underlying concept aligning with ISO 13485's broader documentation requirements, sometimes referenced as part of a Medical Device File.
Why is Device Master Record (DMR) important?
A complete, current DMR ensures that every unit of a device is manufactured to the same approved specifications, protecting product consistency and patient safety across production runs.
Because the DMR is the reference production teams actually follow, keeping it synchronized with the latest approved design and any engineering changes is essential; an outdated DMR risks devices being built to superseded specifications.
During audits, a well-organized DMR demonstrates that manufacturing processes are standardized and controlled, supporting confidence that finished devices reliably meet their intended specifications.
How does Device Master Record (DMR) work?
A typical DMR includes:
- Device specifications. Drawings, formulations and component specifications.
- Production process instructions. Step-by-step manufacturing procedures.
- Quality assurance procedures. Inspection and testing criteria used during production.
- Packaging and labeling specifications. Requirements for how the device is packaged and labeled.
- Installation and servicing procedures. Instructions for devices requiring installation or maintenance.
- Change control. Updates to the DMR as engineering changes are approved.
DMR vs. DHR
| Comparison | DMR | DHR |
|---|---|---|
| Purpose | The manufacturing blueprint: how to build the device | Proof of how a specific unit was actually built |
| Scope | Applies generally to the device | Specific to a unit, lot or batch |
Real-world examples of Device Master Record (DMR)
A medical device manufacturer references its DMR on the production floor, ensuring operators follow the exact approved specifications and process instructions for building each unit.
A quality team updates the DMR after an approved engineering change modifies a component specification, ensuring production immediately reflects the new requirement.
An auditor compares a sampled finished device against the DMR's specifications to confirm the manufacturing process consistently produces conforming product.
Regulations and standards related to Device Master Record (DMR)
The DMR was historically required under FDA 21 CFR 820.181, detailing the specifications and procedures needed to manufacture a device consistently, with ISO 13485 addressing similar production documentation requirements through its broader clause structure.
Under QMSR, effective February 2026, the DMR's dedicated regulatory citation was removed, with equivalent production specification and process documentation now expected under ISO 13485 provisions incorporated by reference.
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How QT9 helps with Device Master Record (DMR)
QT9 QMS and ERP DMR capabilities
- Generate electronic Device Master Records (eDMR) with single and multi-level support.
- Automatically link approved BOMs, routing and specifications to the DMR.
- Ensure only current revisions of controlled documents are included.
- Maintain full traceability and compliance across production documentation.
- Support change control workflows that update the DMR as designs evolve.
- Provide instant access to current manufacturing specifications during production.
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Common mistakes with Device Master Record (DMR)
Common mistakes include allowing the DMR to fall out of sync with approved engineering changes, risking production against outdated specifications.
Other problems include confusing the DMR with the DHF, mistakenly including design development history rather than keeping the DMR focused on manufacturing specifications and procedures.
Frequently asked questions
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