In vitro fertilization (IVF) is an effective but underutilized treatment fo
r longstanding infertility. The median projected cost per IVF cycle in 2001
in the United States would be $9226 and $3531 in 25 other countries, based
on previously published estimates. The cost per delivery arising from IVF
cycles in 2001 in the United States would average $56,419, and $20,522 in e
ight other countries, based on previously published estimates. The cost-eff
ectiveness of IVF has not been proven in three randomized controlled trials
, but these trials are difficult to design and implement. Multiple gestatio
n births significantly increase the cost of IVF treatment. IVF multiple bir
ths cost 36% more than the IVF cycles that gave rise to the multiple births
. The uptake of IVF in most countries falls short of the minimum 1500 cycle
s per annum that would be needed per million population. Comparative intern
ational data indicate that infertile couples would increase their uptake of
IVF services if the price were lower.