21 CFR 111 Readiness: Identity Testing, Master Records and Batch Records
Where Part 111 inspections usually focus: component identity, master and batch records, and the evidence behind release.
In Short
- Every dietary ingredient needs your own identity test before use; a supplier certificate cannot replace it.
- Master records sit in Subpart H and batch records in Subpart I.
- Records are kept one year past shelf life, or two years from distribution if there is no shelf-life date.
The Dietary Supplement Operations Guide
What the label says. What the batch proves.
- The rules and who decides
- Specification to finished batch
- Test, review, investigate
- Labels, samples and recall
Plus Evidence map and four worksheets.
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The Dietary Supplement Operations Guide
What the label says. What the batch proves.
21 CFR Part 111 is FDA's current good manufacturing practice rule for dietary supplements, organised in subparts A to P covering people, plant, equipment, production and process control, quality control, components, master and batch records, laboratory work, manufacturing, packaging and labelling, holding and distribution, returns, complaints and records. Inspection findings cluster around component specifications and identity testing (111.70 and 111.75), master manufacturing records (Subpart H) and batch production records (Subpart I). This guide maps those areas and the evidence an inspector expects to see.
Subpart E: component identity (111.75)
Before using a component that is a dietary ingredient, you must conduct at least one appropriate test or examination to verify its identity (111.75(a)(1)(i)). A supplier certificate of analysis cannot replace that test; the only alternative is an exemption FDA grants on petition (111.75(a)(1)(ii)).
What evidence does this component need?
- At least one appropriate test or examination before use (111.75(a)(1)(i)).
- A supplier certificate does not replace it; only an FDA-granted petition exemption changes this.
- Other specifications may rely on a qualified supplier's certificate.
More on subpart E: component identity (111.75)
For other components, and for the remaining specifications of all components, you may rely on a supplier certificate of analysis if you first qualify the supplier and periodically re-confirm (111.75(a)(2)). Botanical identity needs particular care because similar species and adulterants are common.
Subparts H and I: master and batch records
Subpart H (111.205 onward) requires a master manufacturing record for each unique formulation and batch size. Subpart I (111.255 onward) requires a batch production record for each batch, including the checks performed, results and quality control review.
Where each requirement lives in Part 111
Frequently mislabelled subparts, corrected.
| Subpart | Covers | Key sections |
|---|---|---|
| E | Production and process control system, specifications, component and finished-batch testing | 111.70, 111.75, 111.83 |
| F | Quality control operations | 111.103 onward |
| H | Master manufacturing record | 111.205, 111.210 |
| I | Batch production record | 111.255, 111.260 |
| L | Packaging and labelling operations | 111.403 onward |
| P | Records and recordkeeping | 111.605, 111.610 |
- E
- Covers
- Production and process control system, specifications, component and finished-batch testing
- Key sections
- 111.70, 111.75, 111.83
- F
- Covers
- Quality control operations
- Key sections
- 111.103 onward
- H
- Covers
- Master manufacturing record
- Key sections
- 111.205, 111.210
- I
- Covers
- Batch production record
- Key sections
- 111.255, 111.260
- L
- Covers
- Packaging and labelling operations
- Key sections
- 111.403 onward
- P
- Covers
- Records and recordkeeping
- Key sections
- 111.605, 111.610
More on subparts H and I: master and batch records
Frequent gaps are a marketed product without a current master record, batch records missing in-process checks, and deviations released without a documented investigation and quality decision. Capturing the record as work happens closes many of these.
Testing, Labels and Reserve Samples
Subpart E also requires specifications and testing of finished batches, either every batch or a scientifically valid sample under 111.75(c). Packaging and labelling operations, including label reconciliation, sit in Subpart L.
More on testing, Labels and Reserve Samples
Reserve samples of each batch are kept under 111.83 for one year past the shelf-life date, or two years from distribution of the last batch if there is no shelf-life date. Inspection observations often combine these: a missing finished-product specification, a reconciliation gap, a reserve sample too small for full testing.
Records, signatures and the 21 CFR Part 11 overlay
If Part 111 records are kept electronically, 21 CFR Part 11 applies: validated systems, audit trails, signatures linked to records and controlled retention. Paper avoids Part 11 but takes longer to search and review; electronic records need validation evidence but are easier to retrieve.
More on records, signatures and the 21 CFR Part 11 overlay
V5 supports the electronic route; your team decides the validation scope.
A Readiness Order of Work
Map every dietary ingredient to its identity test and method evidence; tighten receiving so components stay on hold until identity and specifications are confirmed and a person releases them; check every marketed product has a current master record and recent batches have complete records with investigated deviations; spot-check finished-product testing, label reconciliation and reserve samples; then rehearse an inspection. Pace it by risk rather than a fixed number of days.
Readiness Checks
Questions
Can we rely on a supplier COA for component identity?
Not for dietary ingredients. 111.75(a)(1) requires at least one appropriate identity test or examination of each dietary ingredient component before use, unless FDA grants an exemption on petition. For other components, and for specifications other than dietary-ingredient identity, you may rely on a qualified supplier's certificate of analysis under 111.75(a)(2).
What identity-test method does FDA expect for botanicals?
FDA does not mandate a specific method but expects "appropriate" — meaning a method validated to distinguish the species from likely adulterants. FTIR and HPTLC are the working defaults; DNA barcoding is gaining ground for difficult botanicals. Whatever method the plant uses must have validation evidence on file.
How long do 21 CFR 111 records need to be retained?
Under 111.605, for one year past the shelf-life date if you use shelf-life dating, or two years beyond the date of distribution of the last batch associated with the records if you do not. Reserve samples follow the same windows under 111.83.
Does 21 CFR 111 apply to brand-owners who don't manufacture?
FDA's position is that a firm that contracts out manufacturing and markets the product under its name remains responsible for the product meeting Part 111, including holding the specifications and qualifying the manufacturer. Agree in writing who keeps which records and how you will access them.
Practical orientation, not legal advice. Rules differ by jurisdiction; your quality and compliance team decides what applies.
Keep reading
Dietary Supplement cGMP Readiness: Handoffs and Audit Evidence
NDI Notification under 21 CFR 190.6: Contents, the 75-Day Wait and Amendments
NSF 173 & USP <2750> Readiness: Third-Party Supplement Certification- Structure/Function Claims Readiness: DSHEA §6, Disclaimers & Substantiation
Supplement Complaint and Adverse Event Reporting Readiness: U.S. Guide
Supplement Distribution, Holding and Returned Product Readiness Guide