Large no of techniques are their to extract DNA from Serum , i performed few methods like NaI , phenol chlfrm isoamly and Triton heat phenol method etc but non of them gave me any result . Can any one plz help me in this matter .
usually for best reproducability and accuracy I would use a DNA extraction KIT. You can get those by several vendors (Sigma, Qiagen, Promega and many more)
They provide easy to follow protocols (e.g. http://www.promega.com/~/media/Files/Resources/Protocols/Technical%20Manuals/0/Wizard%20Genomic%20DNA%20Purification%20Kit%20Protocol.ashx)
we just use a machine to do this...enough DNA for general purposes like PCR, can be isolated from 20ul serum...
this is my problem too , i going to design conventional method for isolation and capture of fragmented DNA from serum...
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