Hei,
We have had terrible experiences trying to send a parcel containing DNA samples in dry ice to Sweden using TNT. In our first sending attempt, the parcel went missing, was finally found in Turku, and returned to Oulu for dry ice filling. In the second sending attempt the parcel went missing again, was again found in Turku, was promised to be sent to Sweden immediately, but is now in Paris.
I contacted the university's premises and security services asking are we allowed to use any other courier service, since only TNT is mentioned on their pages regarding mailinghttps://patio.oulu.fi/en/services-and-instructions/facilities/premises-and-security-services/reception-services-and. They replied that we are free to use any courier service we wish.
So, to save your nerves from breaking, I warmly recommend choosing some other courier than TNT for sending your parcels!
All the best, Lumi