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从中华鳖Ｐｅｌｏｄｉｓｃｕｓｓｉｎｅｎｓｉｓ和山瑞鳖Ｐｅｌｅａｓｔｅｉｎｄａｃｈｎｅｒｉ的组织材料中提取ＤＮＡ，扩增约１１０ｂｐ的线粒体１２ＳｒＲＮＡ基因片段并进行序列分析，结合从Ｇｅｎｂａｎｋ中检索到的缘板鳖Ｌｉｓｅｍｙｓｐｕｎｃｔａｔａ的序列，构建了３种鳖的１２ＳｒＲＮＡ基因片段序列数据库。序列比较的结果表明中华鳖与其它２种鳖的这段序列均有差别。序列差异在１１．９３％～１９．７８％之间。从江苏省药品检验所提供的４个鳖甲检品各取样０．１～０．５ｇ提取ＤＮＡ，扩增与上述相同的基因片段，与构建的数据库进行比较，结果表明４个检品中只有１块为药典规定的正品，其余３块均为混淆品。
DNA was extracted from tissues of Pelodiscussinensis and Peleasteindachneri, and about 110bp mitochondrial 12SrRNA gene fragment was amplified and sequenced. Based on the sequence of Lisemyspunctata retrieved from Genbank, three species of turtles 12SrRNA gene fragment sequence database. Sequence comparison results show that the soft-shelled turtle and other two kinds of turtle in this sequence are different. The sequence differences ranged from 11.93% to 19.78%. 4 samples of turtle shell from the Jiangsu Provincial Institute for Drug Control were sampled from 0.1 to 0.5g to extract the DNA and amplify the same gene fragment as above and compare with the constructed database to find that only 4 of the 4 samples One for the Pharmacopoeia prescribed a genuine, the remaining three are confused products.