---
type: restriction
id: usps-exempt-human-or-animal-specimens
asset: shipping-restrictions-by-class
title: "Exempt human or animal specimens — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c3_025.htm
source_quote: "Exempt human or animal specimens as defined in 346.12 (d) , are not regulated as hazardous materials but must be packaged to meet mailing standards, including being triple-packaged"
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "Exempt human or animal specimens"
carrier: "USPS"
restriction_type: "restricted"
scope: "all domestic mail"
conditions: "Not regulated as hazardous materials; must be triple-packaged per 346.327; outer packaging must be marked 'Exempt human specimen' or 'Exempt animal specimen'"
verified: true
unverified_fields: conditions, restriction_type, scope
---
**Item category:** Exempt human or animal specimens

**Carrier:** USPS

**Restriction type:** restricted

**Scope:** all domestic mail

**Conditions:** Not regulated as hazardous materials; must be triple-packaged per 346.327; outer packaging must be marked 'Exempt human specimen' or 'Exempt animal specimen'

> Exempt human or animal specimens as defined in 346.12 (d) , are not regulated as hazardous materials but must be packaged to meet mailing standards, including being triple-packaged

Source: <https://pe.usps.com/text/pub52/pub52c3_025.htm>