No final death then
It's not necessarily financially viable to retest as they are cheap enough - £30 to £40 new compared to £150 for a fibre
But it is possible to get a test at approx £20, depending on where you go
By the time you come to testing you may have gone for fibre anyway, but an aluminium is handy kept aside as a spare
The preference would be hpac for testing and you may save on postage by handing to them at an event and collecting at a later one
Dive shops can arrange and are therefore more local to most people.
Check the idest members list for test centres:
http://www.sita.org.uk/idest/idest_members.php