The manufacturing rules behind a tissue-derived product

One purpose, stated in one sentence

The manufacturing rules for human cells and tissue are unusual in having a single stated aim. It is not general product quality. It is communicable disease.

The opening section reads: "You must recover, process, store, label, package, and distribute HCT/Ps, and screen and test cell and tissue donors, in a way that prevents the introduction, transmission, or spread of communicable diseases."

Everything downstream is an application of that. Facilities, air handling, labels, tracking and release are all justified by the same purpose, and the text says so each time.

These rules apply to products made from human cells or tissue. Whether a given preparation is one of those is decided by a separate test, covered elsewhere on this site.

Two donors may not be mixed

This is the flattest rule in the subpart, and it is worth reading twice.

The text: "Human cells or tissue from two or more donors must not be pooled (placed in physical contact or mixed in a single receptacle) during manufacturing."

There is no size threshold and no exception written beside it. The parenthesis closes the obvious workaround by defining what pooling means physically.

The reason is traceability. If material from two people is combined, a later disease investigation cannot say which donor it came from, and the tracking rules further down stop working.

Processing, and what a sample has to represent

The general processing duty is written twice over, once for contamination and once for transmission.

A processor must handle each product in a way that does not cause contamination or cross-contamination during processing. It must also prevent disease transmission through the use of the product.

In-process material is held until checks are done. Each in-process product is controlled until the required inspection and tests or other verification activities are complete.

One sentence governs how sampling is done: "Sampling of in-process HCT/Ps must be representative of the material to be evaluated." A sample chosen for convenience does not satisfy it.

The building is part of the requirement

The facility gets its own section, and the standard is stated in terms of what the building has to prevent.

Any facility used in manufacturing must be "of suitable size, construction, and location to prevent contamination of HCT/Ps with communicable disease agents and to ensure orderly handling of HCT/Ps without mix-ups."

Operations get separated. A facility is divided into separate or defined areas for each operation, or other control systems are established "to prevent improper labeling, mix-ups, contamination, cross-contamination, and accidental exposure of HCT/Ps to communicable disease agents."

Cleaning is documented rather than assumed. Procedures have to assign responsibility, describe the methods and set the schedule, and the records have a fixed life: "You must retain such records 3 years after their creation."

Air, temperature, and the record of both

Environmental control is required where conditions could reasonably be expected to cause contamination or cross-contamination.

The listed control activities are specific. "Temperature and humidity controls," "Ventilation and air filtration," and "Cleaning and disinfecting of rooms and equipment to ensure aseptic processing operations."

Systems are checked, not just installed. Each environmental control system is inspected periodically to verify that it is adequate and functioning properly, with corrective action as necessary.

Monitoring is separate from control. "Where appropriate, you must provide environmental monitoring for microorganisms." The results are documented and kept.

A code that points at a person and may not name one

The tracking requirement is the most distinctive thing in the subpart, because it exists to answer a question after something has gone wrong.

Tracking is required "to facilitate the investigation of actual or suspected transmission of communicable disease and take appropriate and timely corrective action."

The system has to run both directions: from "The donor to the consignee or final disposition," and from "The consignee or final disposition to the donor."

The link is a distinct identification code assigned to each product. And it is constrained: "you must create such a code specifically for tracking, and it may not include an individual's name, social security number, or medical record number."

The person who receives it has to be told the system exists

Tracking only works if the far end participates, so the rule reaches the recipient establishment.

At or before distribution, "you must inform the consignee in writing of the requirements in this section" and of the tracking system being maintained.

An establishment that performs only some manufacturing steps may participate in another establishment's tracking system instead of running its own, provided that system meets every requirement here.

Where a new code is assigned to a product that already had one, procedures have to exist for relating the new code to the old one. The chain is not allowed to break at a handoff.

What may not be released, and who signs the release

Distribution is gated by a record review and by a named individual, and then by a list of prohibitions.

Incoming material is checked first. "You must evaluate each incoming HCT/P for the presence and significance of microorganisms and inspect for damage and contamination."

Before anything is made available, manufacturing and tracking records are reviewed and the release criteria verified. "A responsible person must document and date the determination that an HCT/P is available for distribution."

Then the prohibition. Nobody may "make available for distribution an HCT/P that is in quarantine, is contaminated, is recovered from a donor who has been determined to be ineligible," or one that otherwise fails the release criteria.

Shipping, returns and labels

Three smaller requirements round out the distribution rules, and each one closes a familiar gap.

Containers are engineered rather than chosen. "Packaging and shipping containers must be designed and constructed to protect the HCT/P from contamination," and shipping conditions are established per product type.

Returns are not automatic. "You must establish and maintain procedures to determine if an HCT/P that is returned to your establishment is suitable to be returned to inventory."

Labeling is its own controlled process. Procedures are designed to ensure proper identification and prevent mix-ups, and they "must include verification of label accuracy, legibility, and integrity."

Getting out of a requirement is possible, and it is on the record

The subpart contains its own release valve, which is more informative than the requirements it relieves.

An establishment "may request an exemption from or alternative to any requirement in subpart C or D of this part." The request goes to the director of the relevant center with supporting data.

The timing is fixed. "You must not begin operating under the terms of a requested exemption or alternative until the exemption or alternative has been granted."

Anyone operating under one has to keep documentation of the grant and of the date operations under it began. So an exemption exists as a dated, written thing rather than a practice.

What this is worth to a reader

None of these records reaches a buyer, and nothing in the subpart requires any of it to be published.

What it does give is a way to hear a specific class of marketing claim. A product described as combining material from several donors is describing something this subpart prohibits during manufacturing.

It also sets a standard for what a batch identifier should be. A code that ties a unit back to a single donor and to every record about it is a different thing from a lot number printed for inventory.

The scope needs stating plainly at the end as well as the start. These rules govern products made from human cells or tissue, and nothing above places any peptide inside or outside that category.

Sources

Each document below is named as it names itself, with the date printed on that document rather than the day it was read.

1. Title 21 Code of Federal Regulations section 1271.220, Processing and process controls — the general processing duty at (a), the prohibition on pooling human cells or tissue from two or more donors during manufacturing at (b), and the in-process control, testing and representative sampling requirements at (c) — Electronic Code of Federal Regulations, Office of the Federal Register, January 2001
2. Title 21 Code of Federal Regulations section 1271.290, Tracking — the purpose of facilitating investigation of actual or suspected communicable disease transmission at (a), the two-directional tracking system at (b), the distinct identification code and the prohibition on using a name, social security number or medical record number at (c), and the written notice to consignees at (f) — Electronic Code of Federal Regulations, Office of the Federal Register, May 2005
3. Title 21 Code of Federal Regulations section 1271.265, Receipt, predistribution shipment, and distribution of an HCT/P — the evaluation of incoming product at (a), shipment in quarantine at (b), the record review and responsible person's dated release determination together with the categories that may not be made available for distribution at (c), packaging and shipping containers at (d), and the return-to-inventory procedures at (f) — Electronic Code of Federal Regulations, Office of the Federal Register, January 2001
4. Title 21 Code of Federal Regulations section 1271.190, Facilities — the size, construction and location standard at (a), cleaning and sanitation at (b), the division of a facility into separate or defined areas at (c), and the cleaning procedures and three-year record retention at (d) — Electronic Code of Federal Regulations, Office of the Federal Register, January 2001
5. Title 21 Code of Federal Regulations section 1271.195, Environmental control and monitoring — the listed control activities including temperature and humidity, ventilation and air filtration and cleaning and disinfecting for aseptic processing at (a), the periodic inspection of each system at (b), environmental monitoring for microorganisms at (c), and the records at (d) — Electronic Code of Federal Regulations, Office of the Federal Register, January 2001
6. Title 21 Code of Federal Regulations section 1271.155, Exemptions and alternatives — the right to request an exemption from or alternative to any requirement in subpart C or D, the submission to the director of the appropriate center with supporting data, the criteria for granting one, and the prohibition on operating under a requested exemption before it is granted — Electronic Code of Federal Regulations, Office of the Federal Register, January 2001
7. Title 21 Code of Federal Regulations section 1271.250, Labeling controls — the procedures to control labeling and prevent mix-ups, the required verification of label accuracy, legibility and integrity, and the requirement that each product made available for distribution be accompanied by documentation of the donor eligibility determination — Electronic Code of Federal Regulations, Office of the Federal Register, January 2001
8. Title 21 Code of Federal Regulations section 1271.145, Prevention of the introduction, transmission, or spread of communicable diseases — the single stated purpose governing recovery, processing, storage, labeling, packaging and distribution, and the screening and testing of cell and tissue donors — Electronic Code of Federal Regulations, Office of the Federal Register, January 2001