Labeling a Package Containing a Category A Substance
Packages that contain category A substances must exhibit these labels.
Proper shipping name and UN number(Category A label)
or 
Hazard class 6 infectious substance label that includes this statement:
In case of damage or leakage, immediately notify public health authority. In the US, notify the CDC 1-800-232-0124
UN package certification mark
Orientation arrows (if greater than 50 mL)
Contact information (Shipper or Consignee Identification)
The contact person (usually the shipper), referred to as the "responsible person" by IATA, must be someone who can be reached 24 hours a day, seven days a week (24/7) and can answer questions about the content of the package. The 24/7 number must reach that person directly and not a pager or answering machine/service. If the contact person that you are listing is the person receiving the specimen, be certain that the person is aware you are listing him/her as the contact person and has consented to it.
