21 CFR Part 1271 · Human Cells, Tissues, and Cellular and Tissue-Based Products

21 CFR 1271.350

Reporting

21 CFR 1271.350 is the regulation titled “Reporting” in 21 CFR Part 1271, Human Cells, Tissues, and Cellular and Tissue-Based Products. Since 2021, 2 FDA warning letters have cited it.

Letters citing it
2 since 2021
Jan 1 to Oct 30, 2026
0 against 0 on the same dates in 2025
Most often cited with
21 CFR 1271.47, in 2 letters
Closed out
50% of these letters have a published close-out
See the 2 letters citing 21 CFR 1271.350 →

Letters citing it, by year issued

All are biologics letters. 2026 runs to Oct 30, 2026. Pick a year to see its letters.

  1. 02021
  2. 02022
  3. 02023
  4. 22024
  5. 02025
  6. 02026

The regulation

Read the text of 21 CFR 1271.350 (eCFR, as of Sep 1, 2026)

(a) Adverse reaction reports. (1) You must investigate any adverse reaction involving a communicable disease related to an HCT/P that you made available for distribution. You must report to FDA an adverse reaction involving a communicable disease if it:

(i) Is fatal;

(ii) Is life-threatening;

(iii) Results in permanent impairment of a body function or permanent damage to body structure; or

(iv) Necessitates medical or surgical intervention, including hospitalization.

(2) You must submit each report on a Form FDA-3500A to the address in paragraph (a)(5) of this section within 15 calendar days of initial receipt of the information.

(3) You must, as soon as practical, investigate all adverse reactions that are the subject of these 15-day reports and must submit followup reports within 15 calendar days of the receipt of new information or as requested by FDA. If additional information is not obtainable, a followup report may be required that describes briefly the steps taken to seek additional information and the reasons why it could not be obtained.

(4) You may obtain copies of the reporting form (FDA-3500A) from the Center for Biologics Evaluation and Research (see address in paragraph (a)(5) of this section). Electronic Form FDA-3500A may be obtained at http://www.fda.gov/medwatch or at http://www.hhs.gov/forms.

(5) You must submit two copies of each report described in this paragraph to the Food and Drug Administration, Center for Biologics Evaluation and Research, Document Control Center, 10903 New Hampshire Ave., Bldg. 71, Rm. G112, Silver Spring, MD 20993-0002. FDA may waive the requirement for the second copy in appropriate circumstances.

(b) Reports of HCT/P deviations. (1) You must investigate all HCT/P deviations related to a distributed HCT/P for which you performed a manufacturing step.

(2) You must report any such HCT/P deviation relating to the core CGTP requirements, if the HCT/P deviation occurred in your facility or in a facility that performed a manufacturing step for you under contract, agreement, or other arrangement. Each report must contain a description of the HCT/P deviation, information relevant to the event and the manufacture of the HCT/P involved, and information on all follow-up actions that have been or will be taken in response to the HCT/P deviation (e.g., recalls).

(3) You must report each such HCT/P deviation that relates to a core CGTP requirement on Form FDA 3486 within 45 days of the discovery of the event either electronically using the Center for Biologics Evaluation and Research electronic Web-based application or by mail to the Food and Drug Administration, Center for Biologics Evaluation and Research, Document Control Center, 10903 New Hampshire Ave., Bldg. 71, Rm. G112, Silver Spring, MD 20993-0002.

[69 FR 68686, Nov. 24, 2004, as amended at 80 FR 18095, Apr. 3, 2015]

Text from eCFR as of Sep 1, 2026.

Cited alongside it

Regulations that appear in the same letters as 21 CFR 1271.350.

Latest letters citing it

The 2 letters citing 21 CFR 1271.350 that FDA posted most recently.

See the 2 letters citing 21 CFR 1271.350 →
For regulated teams

Put this kind of reading to
work on your own records.

Botable builds and runs a custom AI layer around the software you already use, so your team can do the job you hired them for.

Counts include every citation in a letter, as the Letters filter does. How this database is built.

Every letter by dateHow this database is built

FDA Warning Letter Alerts

Share this view

Send the same filters, search and view to a colleague.

You choose what to post or send. Sharing a link does not change access to this site.