# Radioactive materials bearing Class 7 labels — international mail — Postal shipping restrictions by item category

For Radioactive materials bearing Class 7 labels, item category is Radioactive materials bearing Class 7 labels — international mail; carrier is USPS; restriction type is prohibited; scope is international mail; conditions is Radioactive materials bearing or required to bear a Class 7 Radioactive White-I, Yellow-II, or Yellow-III label are prohibited; eligible shipments may only go via First-Class Package International Service with Registered Mail, recorded from its source on 2026-08-04.

- **Item category:** Radioactive materials bearing Class 7 labels — international mail
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** prohibited _(our reading, not quoted from the source)_
- **Scope:** international mail _(our reading, not quoted from the source)_
- **Conditions:** Radioactive materials bearing or required to bear a Class 7 Radioactive White-I, Yellow-II, or Yellow-III label are prohibited; eligible shipments may only go via First-Class Package International Service with Registered Mail _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> International Mail: Radioactive materials bearing or required to bear a Class 7 Radioactive White-I, Radioactive Yellow-II, or Radioactive Yellow-III hazardous materials warning label

## Source

- https://pe.usps.com/text/pub52/pub52c3_026.htm

Last verified: 2026-08-04. Review by: 2027-08-04.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).