Updated October 7, 2026 · By Rob Braddock
Active pharmaceutical ingredients, or APIs, connect a drug development program to its manufacturing process. Development teams need material that meets the intended quality requirements, arrives when needed, and can be produced through a process that is understood at the planned scale. A successful laboratory preparation alone does not establish manufacturing readiness.
Connect the Development Plan to the Supply Plan
Start with the quantities, timing, and quality needs of the program. Align drug substance production with formulation work, analytical testing, stability activities, and clinical supply planning as applicable. Identify who decides priorities when those needs compete for the same material or equipment.
Build Process Understanding Before Transfer
FDA’s ICH Q11 guidance addresses development and understanding of drug substance manufacturing processes, including impurity reduction and quality information. Use the applicable guidance with qualified technical and regulatory specialists to determine the evidence needed for your product.
From an operational perspective, the transfer package should make the work reproducible by the receiving team. Capture instructions, known sensitivities, material requirements, equipment assumptions, sampling plans, and unresolved questions. Do not leave important knowledge only in the originating scientist’s experience.
| Planning area | Question to resolve |
|---|---|
| Process | Which operating conditions and material attributes need close control? |
| Equipment | How does the receiving equipment differ from the development setup? |
| Materials | Are specifications, suppliers, and lead times understood? |
| Analytical support | Can testing provide the required information within the schedule? |
| Facilities | Are utilities, handling, cleaning, and containment arrangements suitable? |
| People | Who owns training, execution, review, and technical escalation? |
Assess Scale Up as a Change
Larger scale can change mixing, heat transfer, filtration, drying, and equipment occupancy. The impact depends on the process. Define the engineering and quality assessments before selecting the larger equipment or committing to a production date. Include safety review of the proposed operating conditions.
- Compare the development and receiving process step by step.
- Document the assumptions behind capacity and cycle time estimates.
- Identify experiments or demonstrations needed to resolve uncertainty.
- Plan material quantities for trials, testing, and expected losses.
- Assign owners to open risks and set readiness gates before execution.
Illustrative Transfer Risk
Suppose laboratory filtration is quick, but the receiving plant has a shared filter with a long cleaning turnaround. Chemistry performance alone would miss that scheduling constraint. Assess filter availability, cleaning, and sampling together before promising a supply date. This is a hypothetical planning example, not a client case study.
Maintain a Clear Record of Decisions
Record the process version, changes made, supporting data, and remaining questions. Assess changes with the appropriate technical, quality, and regulatory owners. Keep the supply plan current as process understanding improves rather than treating the original schedule as fixed.
For facility and operational preparation, read our API manufacturing readiness guide. For terminology, see what APIs are and why they matter.
Frequently Asked Questions
Can we transfer the laboratory instructions unchanged?
Compare the equipment, scale, materials, controls, and intended use first. Identify the work needed to support the transfer.
Who should lead the readiness review?
Assign a accountable project owner and involve the relevant process, engineering, analytical, manufacturing, quality, and regulatory specialists.
Discuss Your Manufacturing Priorities
PharmExcel helps leaders assess manufacturing readiness, systems, staffing, and improvement priorities and turn findings into practical actions. Contact Rob to discuss your priorities or explore our consulting services.
About the Author
Rob Braddock founded PharmExcel Consulting after manufacturing leadership roles at Evergreen Theragnostics, BioCentriq, Pfizer/Wyeth Vaccines, and Chemtrade. His consulting work focuses on manufacturing operations, systems, and organizational development.