well, there are differences in sexual desire that are just hard to change. If you love your husband and he has really tried to address this issue medically, you have to give him credit for trying. He may, however, have gotten used to lower sexual expresssion so that even if his testosterone levels are higher, his habit is for less, not more, sexual interaction.
There are a few things you can do. One is masturbate. It's just fine to do- and while the emotional component isn't as good as sex with your husband, it can be very satisfying--and very effective at reducing the sexual tension you are carrying around with you. If you want, read a sexy book or see a movie, buy a vibrator- which you can do on line where it is private, safe and you have lots of options. There are all kinds of toys to play with and women love almost all of them! ( I think the following are all good, trustworthy sites..mostly owned by women!--lovers.com, babesintoyland.com, Xandria.com)
If you are still not happy with the situation, how about going to see a sexual therapist together-- or going to a sexual enrichment session with David Schnarsch in Evergreen Colorado or with a great medical couple at Miravel resort. These are pricey but really can affect a long term sex life in a positive direction.
we have the same problem but he hasn't went to the doctor to get checked yet.you can always go buy some toys for yourself maybe he would want to help if you wanted him ti know about them,but we would rather have the real thing anytime,cause that gets old afer awile to.i could do it and it does,'t even faze my husband,he'll just roll over and go to sleep,i thought all men would like seing their wife.good luck....