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排卵試紙可以測早孕嗎？排卵試紙測早孕準嗎？

出處：媽媽育兒網(wǎng) 日期：2010-08-23 11:48:15 編輯：admin

試紙有兩種，一種是排卵試紙，另一種是早孕試紙，不過現(xiàn)在有很多人都在問同一個問題，那就是排卵試紙可以測早孕嗎？排卵試紙測早孕準嗎？排卵試紙能不能測試早孕呢？下面我們來看婦科專家對這個問題的詳細介紹。

婦科專家說，排卵試紙是可以測試出早孕，但一般不建議使用，因為排卵試紙測試懷孕有很多交叉情況，誤差很大，如果懷疑自己懷孕最好還是使用早孕試紙測試，比較準確。

排卵測試紙，它主要是測女性體內(nèi)的黃體生成素（LH）；測早孕用的是早孕測試紙，它主要是測胚胎滋養(yǎng)層細胞產(chǎn)生的絨毛膜促性腺激素（HCG）。表面上看來，這兩種激素是風馬牛不相及的。但HCG有兩條鏈α和β，其中α鏈的結(jié)構(gòu)和LH、fsh基本相似，容易發(fā)生交叉反應(yīng)，所以醫(yī)學上判斷是否懷孕一般都以β作為標準。正因為HCG和LH有交叉，而HCG中的β含量遠遠低于α，當βHCG只有50-100的時候，αHCG往往已經(jīng)達到一兩千左右了。早孕試紙決定于βHCG，交叉反應(yīng)決定于αHCG，所以會出現(xiàn)排卵試紙陽性早于早孕試紙。

現(xiàn)在的早孕試紙基本上都是測試βHCG，排卵試紙沒有弱陽不表示你沒有懷孕，因為交叉反應(yīng)不是必然的。排卵試紙陽也不表示已經(jīng)懷孕，因為可能是你LH沒有完全撤退，也可能是和FSH的交叉反應(yīng)。何況就算真的是α-HCG的交叉反應(yīng)，也不表示懷孕。如果α-HCG有了，β-HCG沒有跟上來，也沒有意義的。所以說排卵試紙雖說可以測試早孕，但準確性不是很高。

排卵試紙使用方法

1、用潔凈、干燥容器收集尿液，一定不可使用晨尿。

 2、收集尿液的最佳時間是早10點至晚8點，并盡量采用每一天同一時刻的尿樣。 

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