Short of a home DNA test kit, no. Pruning may help encourage it to flower.

Kiwi take up to five years to flower. I had one kiwi vine die in the first season and four were left. The male died and there was no pollination. I waited two more years to have male grafts flower. I have a large beautiful trellised vine and I don't like the fruit that much. I am cutting it all back and grafting fuzzy kiwi onto the hardy vine in the spring. Kiwi grafts are very vigorous you might want to try it. Email me if you are interested in cuttings male and female.