A kit for determining ctDNA concentration and a method for determining ctDNA concentration is disclosed, wherein the method comprising dissolving extracted ctDNA in Tris-HCl buffer with pH>7.0 and adding into the buffer 2,7-bis(1-methyl-4-vinylpyridine)-9-ethylcarbazole iodised salt as a molecular probe, calculating the concentration of ctDNA in the solution by measuring the Fluorescence intensity of the solution. It has extremely high sensitivity in the determination of 0 μg/ml˜50 μg/ml ctDNA solution.
公开了用于确定ctDNA浓度的试剂盒和确定ctDNA浓度的方法,其中该方法包括将提取的ctDNA溶解在pH>7.0的
Tris-HCl缓冲液中,并向缓冲液中添加2,7-双(1-甲基-4-
乙烯吡啶)-9-乙基
咔唑碘盐作为分子探针,通过测量溶液的荧光强度来计算溶液中ctDNA的浓度。在确定0 μg/ml~50 μg/ml ctDNA溶液时具有极高的灵敏度。