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外國(guó)人都在用的方法---小蘇打測(cè)男女，準(zhǔn)確率高達(dá)98%！(2)

出處：媽媽育兒網(wǎng) 日期：2017-10-26 10:40:58 編輯：薄荷

1、B超

從醫(yī)學(xué)上來(lái)講，在懷孕20周左右就可以進(jìn)行B超檢查，辨別出胎兒性別，當(dāng)然前提是，胎兒的體位合適，B超醫(yī)師可以看到孩子的關(guān)鍵部位。但由于法律規(guī)定，醫(yī)生不能向孕婦透露胎兒性別。所以檢查過(guò)程中，為了避免透露胎兒的性別，醫(yī)生會(huì)主動(dòng)的回避胎兒的性別特征以及下半身，同時(shí)，在后期制作光盤時(shí)，也會(huì)將可能泄露胎兒性別的部分進(jìn)行處理。

2、驗(yàn)血

驗(yàn)血是最快可以得知胎兒性別的方法。但目前國(guó)內(nèi)還沒(méi)有通過(guò)驗(yàn)血知胎兒性別的技術(shù)。最近的擁有此項(xiàng)技術(shù)的地方是香港。懷孕7~8周抽取孕婦的血液，送到香港診所內(nèi)檢測(cè)。抽血做胎兒性別鑒定的原理：

孕婦的血液標(biāo)本被抽出后，首先經(jīng)過(guò)兩次高速離心處理，將上層的清液移入新的無(wú)菌管內(nèi)，冷凍保存?zhèn)溆?。然后?yīng)用試劑將上清液中的DNA提取出來(lái)，將其染色，放在在紫外燈下觀察。如果看到SRY的條帶意味著是男孩，沒(méi)有則表明是女孩。這個(gè)費(fèi)用較高，大約5000-6000元，并且沒(méi)有正規(guī)化，血液很容易在護(hù)送途中受到污染，準(zhǔn)確率不能保證。

小編的話

外國(guó)的小蘇打測(cè)男女其實(shí)和中國(guó)的酒精測(cè)男女是一個(gè)道理，將尿液與其混合，再觀察尿液的變化。但是還不能證實(shí)和胎兒性別有什么關(guān)系。如果想知道胎兒性別，可以做B超檢查生殖器，也可以抽血，但實(shí)在沒(méi)有必要，生下來(lái)就知道了！

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