I found this wonderful resource. Here are a bunch of Hearing Tests.
Hearing Test Products and Tinnitus Test Products
There are online versions and a CD version which can be purchased. I have used both. Because they are self administered you can go over and over the test until you are entirely sure that you have honestly identified each threshold. They are full range, unlike any 'medical' hearing test I have come across. By saving/printing the results say every six months or year, any dangerous trend or damage should be obvious.
It is best to use a decent set of headphones and a very quiet space.
Don't be disappointed or freaked out by your results. Both ears will not be the same. A common cold will have a huge short term effect.
Best Regards, Dan FitzGerald AMIOA
Sound Sound - Homepage