---
type: restriction
id: usps-blood-for-transfusion-containing-category-a-infectious-substance
asset: shipping-restrictions-by-class
title: "Blood for transfusion containing Category A infectious substance — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c3_025.htm
source_quote: "Blood for Transfusion: Blood collected for transfusion and known or suspected to contain a Category A infectious substance."
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "Blood for transfusion containing Category A infectious substance"
carrier: "USPS"
restriction_type: "prohibited"
scope: "all mail"
conditions: "Blood collected for transfusion and known or suspected to contain a Category A infectious substance is nonmailable"
verified: false
unverified_fields: carrier, conditions, item_category, scope
---
**Item category:** Blood for transfusion containing Category A infectious substance

**Carrier:** USPS

**Restriction type:** prohibited

**Scope:** all mail

**Conditions:** Blood collected for transfusion and known or suspected to contain a Category A infectious substance is nonmailable

> Blood for Transfusion: Blood collected for transfusion and known or suspected to contain a Category A infectious substance.

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