Sharps and regulated medical waste containing Category B infectious substance (UN3291)
For Sharps and regulated medical waste containing Category B infectious substance (UN3291), carrier is USPS; restriction type is restricted; scope is domestic mail via USPS Ground Advantage only; conditions is Permitted via USPS Returns Service via USPS Ground Advantage only; vendor must obtain prior authorization; strict packaging, testing, labeling requirements apply, recorded from its source on 2026-08-04.
- Item category
- Sharps and regulated medical waste containing Category B infectious substance (UN3291)
- Carrier
- USPS our reading
- Restriction type
- restricted our reading
- Scope
- domestic mail via USPS Ground Advantage only our reading
- Conditions
- Permitted via USPS Returns Service via USPS Ground Advantage only; vendor must obtain prior authorization; strict packaging, testing, labeling requirements apply unconfirmed
Values marked unconfirmed are shown, but we could not tie them to the quote below: Conditions. Read the quote and judge them yourself.
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
Regulated medical waste and sharps medical waste as defined in 346.12 ( f ) and 346.12 ( g ) and containing materials classified as Category B infectious substances must be marked UN3291 and are permitted for mailing only using USPS Returns Service (refer to DMM 505.3) via USPS Ground Advantage service.
— pe.usps.com, retrieved 2026-08-04
Source
- pe.usps.comhttps://pe.usps.com/text/pub52/pub52c3_025.htm