HCT/P Regulatory Evaluation Pathway | 21 CFR Part 1271 Classification Framework

HCT/P Regulatory Evaluation Pathway

Human Cells, Tissues, and Cellular and Tissue-Based Products (HCT/Ps) are regulated in the United States under the framework established in 21 CFR Part 1271. Regulatory classification depends on whether a product meets the eligibility criteria described in 21 CFR 1271.10(a).

Understanding the regulatory evaluation pathway helps explain how products may be regulated either under Section 361 of the Public Health Service Act or under the biologics licensing framework associated with Section 351.

Regulatory evaluation pathway diagram illustrating how Human Cells, Tissues, and Cellular and Tissue-Based Products are assessed under 21 CFR Part 1271 to determine whether they fall under Section 361 HCT/P regulation or Section 351 biologics regulation.

Educational diagram illustrating the regulatory evaluation pathway used when assessing how Human Cells, Tissues, and Cellular and Tissue-Based Products (HCT/Ps) may be classified under 21 CFR Part 1271.


Initial Regulatory Evaluation

When evaluating an HCT/P product, several regulatory criteria may be examined to determine whether the product may qualify for regulation solely under Section 361.

If all regulatory criteria described in 21 CFR 1271.10(a) are satisfied, the product may fall within the Section 361 regulatory framework.


Section 361 Regulatory Pathway

Products that meet all criteria in 21 CFR 1271.10(a) may be regulated solely under Section 361 of the Public Health Service Act.

Establishments handling these products remain subject to regulatory safeguards that may include donor eligibility determination, establishment registration, and compliance with Current Good Tissue Practice (cGTP) requirements.


Section 351 Regulatory Pathway

If an HCT/P product does not meet the criteria outlined in 21 CFR 1271.10(a), the product may be regulated as a biological product under Section 351 of the Public Health Service Act.

Products regulated under Section 351 may require additional regulatory oversight, which may include biologics license applications and other regulatory review processes.


Regulatory Criteria Frequently Examined


Importance of Understanding the Evaluation Framework

Healthcare professionals, regulatory specialists, and tissue establishments may review the regulatory evaluation framework when assessing compliance considerations related to human cell and tissue products.

Educational resources describing these regulatory concepts can assist organizations in understanding the regulatory environment surrounding HCT/P products and the safeguards intended to reduce communicable disease transmission.


This information is provided for educational purposes only.

Certain referenced materials may be regulated as Human Cells, Tissues, and Cellular and Tissue-Based Products (HCT/Ps) under 21 CFR Part 1271. Registration under 21 CFR Part 1271 does not constitute FDA approval, clearance, or evaluation of safety or effectiveness.

This information is not intended to diagnose, treat, cure, or prevent any disease.