Ladies: I post on the Femera board too and someone there was looking for this info and I thought that I would also post the info here for anyone else that might be curious........
I am sorry, but I forgot who was looking for info on "FAST"- If your still out there here it is:
Among the most advanced forms of AI is FAST- fallopian sperm transfer system. This means that your partner's

is place directly into each of your fallopian tubes, the site where most natural conceptions take place. Since you should ovulating at the time of your insemination, your

will strive to place the

as close to your egg as possible, thus making fertilization faster and eaiser. How effective is FASt? Small but significant studies published in the journal "Fertility and Sterility" have shown that when combined with fertility drugs to stimulate egg production, FAST achieves a 40%

er

pregnancy rate PER CYCLE, as compared with 20% for standard IUI.
Research theorize it's because FAST can remove small obstacles from your tubes that might otherwise keep

from reaching your egg. What also increases fertilization: location, location, location! Unlike other forms of insemination, in which some

is always lost en route to the egg, in FAST, the full volume of available

is deposited right next to the egg, so that you get the full benefit of everything your partner has to offer.
Also important: FAST cost about 1/3 as much as standard in vitro and in many instances can offer similar 2. For this reason many fertility experts now suggest trying FAST before advancing to more complex and costly fertility treatments.
On the downside, (I personally don't see this as a downside) FAST may increase the risk of multiple births

, and there is some concern that it may also increase the risk of ectopic pregnancy and increased production of antisperm antibodies.
This info I found in "Getting Pregnant"
I hope this little info helps!