You can have a blood test for titers
My vaccine records were lost in the UK and to avoid having the
shots I had already had, the doctor took a blood test to check for
immunity. If you have had a BCG for TB, you should let them
know as you will otherwise appear to test positive for the
infection.
The blood tests cost me roughly the same as the shots. They\'ll
take blood anyway for the HIV and syphilis tests. The cost for all
this was somewhere between $300-$450, including the medical
itself (I forget the exact sum as it was nine months ago).
Good luck.