Choosing an NHP contract manufacturer: GMP questions to ask before you sign
A quotation tells you the price of production. A technical review helps you understand what that price actually includes.
Discuss manufacturer selectionWhat should a brand do first?
Select an NHP manufacturer by checking its relevant activities, technical capability, quality responsibilities and evidence of execution. Health Canada’s GUI-0158 version 4 took effect on March 4, 2026. Use the current guidance alongside a product-specific assessment, not as a reason to assume that a certificate or low quotation settles every quality question.[1]
Who this is for: NHP brands selecting a first manufacturer, moving production, adding a format or comparing domestic and overseas supply options.
What does the current GMP guidance mean for selection?
GUI-0158 describes a documented quality system, defined responsibilities, supplier oversight, control of outsourced activities and quality assurance oversight of batch release. The practical question for a brand is how a candidate manufacturer demonstrates these activities for the proposed product.
The questions in this article are Kompete’s suggested commercial due-diligence prompts. They are not an exhaustive regulatory audit or a claim that every document must be disclosed without confidentiality arrangements.[2]
What should you verify before requesting a final quote?
Give every candidate the same technical brief. Include the formula, material grades, dose, pack count, product specifications and expected production volume. Identify whether development, pilot trials, analytical methods, packaging procurement and stability work are included or priced separately.
Ask the candidate to name the facilities and outsourced partners expected to perform the work. Clarify which activities take place where and what happens if the proposed site changes. A quote that depends on an unconfirmed subcontractor deserves a different level of certainty from a demonstrated in-house capability.
Ten questions to ask an NHP contract manufacturer
Use these questions in a technical meeting and request supporting examples where appropriate. Confidential records can often be discussed through redacted examples or an agreed review process.
| Question | What a useful answer should clarify |
|---|---|
| Who approves the batch for release? | Named responsibility, decision process and release documentation. |
| How are incoming ingredients qualified? | Specifications, supplier assessment and appropriate verification. |
| What tests are included in the quoted price? | Methods, limits, frequency, laboratory and cost of extra work. |
| What happens after an out-of-specification result? | Investigation, escalation and disposition responsibilities. |
| How are deviations and corrective actions handled? | Documented investigation and checks that actions worked. |
| What changes require advance notification? | Material, supplier, process, method, site and packaging changes. |
| What supports the proposed shelf life? | Product and package relevance, study design and ongoing work. |
| How are artwork and labels controlled? | Approved masters, reconciliation and prevention of mix-ups. |
| What records can the brand access? | Batch documents, testing, complaints and traceability information. |
| How are complaints and recalls coordinated? | Contacts, decision authority, communication and responsibilities. |
Agree on the product before comparing the price.
Specifications, testing, packaging and transfer assumptions should be visible in the quotation. Otherwise two prices may describe very different scopes of work.
How should you discuss testing and shelf life?
Avoid stopping at “testing included.” Request the proposed specification and identify which tests are performed on each batch, which rely on a justified approach and which require development. Confirm who pays when an investigation, method problem or additional analysis is needed.
For stability, ask how the evidence relates to the actual formula, manufacturing process and commercial packaging. A similar product may provide background without resolving your product’s shelf-life question. Define the samples, storage conditions, timepoints, tests, reporting and response to adverse trends in the scope of work.
What belongs in the quality and technical agreement?
Turn important verbal answers into written responsibilities. Define who owns the formula and artwork, who approves changes, who investigates complaints, who keeps records and how the brand obtains information when needed. Include the communication path for urgent quality concerns.
Separate commercial terms from technical acceptance criteria. A deposit schedule cannot tell you whether a pilot batch met the agreed standard. Define what successful transfer looks like and what happens when the candidate process cannot meet the specification without a formula or packaging change.
How to compare two manufacturing quotations fairly
Normalize the quotations to the same batch size, unit count, material specification, packaging and testing scope. Make excluded costs visible: freight, tooling, analytical work, stability, setup, waste allowances and storage can affect the total decision.
Consider a powder quotation that includes only basic release testing versus one that includes additional product-specific analysis and a defined stability program. The lower unit price may still be the right commercial choice, but only after the missing work and responsibilities are understood. The comparison should show total scope, not just a price per tub.
A practical technical-transfer sequence
Start with the approved product brief and a document gap list. Resolve key manufacturing assumptions before a trial: blend size, equipment, fill behaviour, ingredient handling and packaging compatibility. Agree in advance on the observations and acceptance criteria needed from the trial.
After the trial, record deviations from the intended process and decide whether more work is needed. Confirm the final formula, specifications and controlled records before routine production. A successful transfer is one the receiving team can repeat and document, rather than a single good-looking sample.
What to gather before requesting a review
Send what you have and identify what is still being developed. These documents help us define a useful scope and the questions to resolve first.
- Quantitative formula and target product specifications
- Current NPN or regulatory pathway plan
- Dosage form, pack size, forecast volume and target cost
- Required tests, shelf-life target and stability evidence
- Packaging specifications and critical sensory attributes
- Candidate quotations, proposed agreements and transfer timeline
Questions brands ask
Is a GMP certificate enough to choose a manufacturer?
It is one item to assess. Review its scope and relevance alongside the proposed site, actual capabilities and product-specific documentation.
Should the cheapest quote be rejected?
No. Compare identical scopes and understand exclusions. Price becomes useful when you know which testing, development and quality activities it includes.
Can a manufacturer assign shelf life from a similar product?
Ask what evidence supports the proposed period for your formulation, process and packaging. Similarity should be evaluated rather than assumed.
Who should own the formulation and technical records?
Agree on ownership, access and transfer rights in writing. Commercial arrangements vary, so resolve this before paying for development or committing to production.
Can Kompete support a transfer from an existing supplier?
Yes. A project can cover the transfer brief, document gaps, candidate comparison and trial planning, with additional specialist work defined in the scope.
Turn the next decision into a clear plan.
Kompete can help prepare the technical brief, compare supplier responses and identify formulation, documentation and quality questions before a manufacturing commitment.
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Related insights
Sources and scope
Sources checked October 22, 2026. Regulatory requirements and guidance can change. The checklists, examples and development workflows are Kompete’s practical planning suggestions; product-specific decisions require review of the actual formula, intended use and documentation.