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The transvaginal is used primarily in the 1st trimester..When the sex is hard to determine..A standard pelvic abdomen is used usually in the 2nd trimester...15-20 weeks to determine sex...

2006-07-10 04:07:38 · answer #1 · answered by *bossy* 4 · 0 0

usually done to early for this

2006-07-10 04:15:29 · answer #2 · answered by dumplingmuffin 7 · 0 0

correct sex? is there incorrect sex? how do you predict sex?

2006-07-10 04:06:46 · answer #3 · answered by drumrchick 3 · 0 0

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