Selecting an OEM partner is a risk decision. A good manufacturer protects your timeline, brand, and compliance posture. A weak manufacturer creates delays, rework, and unpredictable outcomes.
Below is a checklist you can use when sourcing an OEM partner—especially if your target markets require strong quality expectations.
Step 1: Confirm the quality baseline
ISO 13485 certification
Ask for:
Certification scope (what sites and activities are covered)
Audit cadence and certification body details
Internal audit and management review cadence (high-level summary is enough)
GMP readiness
Depending on product category and market expectations:
Hygiene controls, controlled procedures, training records
Complaint handling and recall readiness (process-level discussion)
Step 2: Evaluate “how they run production”
Process control
Ask:
What are the critical-to-quality steps?
How do they prevent mix-ups and labeling errors?
How do they handle deviations and nonconformities?
Traceability
Ask:
Batch/lot traceability approach
Material receiving and supplier qualification workflow
Record retention approach
Step 3: Prototype and pilot run capability
Many OEM relationships fail at the handoff from “sample” to “scale.” Ask:
Do they have a structured sampling plan template?
What defines a successful pilot run?
How do they lock specs and manage revisions?
Step 4: Documentation deliverables
Ask the OEM to show sample templates (redacted is fine):
Inspection records and acceptance criteria
Batch records / production reports
Packaging and labeling control (artwork versioning, approvals, revision history)
Step 5: Change control and communication discipline
This is where long-term partnerships win:
Engineering change workflow and approvals
How they notify customers about changes
Lead time impacts and risk assessment process
Common red flags
“We can do anything” without asking about target market and specs
No clear answer on labeling/packaging control
Vague timelines that shift every week
No structured approach to sampling → pilot → scale
What to request in the first inquiry email
To get a fast, meaningful response, include:
Product category and target market
Desired packaging format
Estimated volume and timeline expectations
Any critical requirements (label languages, labeling constraints, etc.)
