as for the first question.......
if you are diagnosed as androgen deficient, you can be prescribed a few different items...
1- depo-test - although some insurance companies will not cover injectables....(cypionate)
2- android or methyl-test (pill)....the 10mg per day rx you will get for this stuff is mainly useless....plus it is hard on the liver
3- test patch (androderm etc.)....i don't care much for this delivery system....plus i hear complaints of skin irritation....

unless you have a condition i dont know about, these are your basic choices for test replacement...