The value of serum beta-hCG in the prediction of pregnancy following gamete intrafallopian transfer.

Serum beta-hCG values in 149 GIFT pregnancies obtained on day 14 after oocytes retrieval and gamete intrafallopian transfer were evaluated. Mean beta-hCG value in multiple livebirths was higher than in the singleton and non-viable pregnancy groups and mean beta-hCG value in the latter two groups did not differ from each other. Serum beta-hCG level > or = 70 mIU/ml could be a suitable level to predict viable pregnancy with 72.8 per cent sensitivity and 92.85 per cent positive predictive values.