Abstract
Extraction of genomic DNA is the very first experiment in the study cascade of human inherited diseases. Blood is preferred to be the material for DNA extraction. In the case of limitation of the material source, for example, new born screening program, blood is saved as dried spot in filter paper. In practical, long term storing blood sample as the dried spots on filter paper leads to more advantages for DNA extraction essay which need to be performed several times. This study provides an efficient method with 2 step lyses allow high concentration of DNA is extracted from samples. Comparing to the commercial QIAamp® DNA Mini Kit DNA concentration extracted from this method is higher, the quality of DNA is equal and the cost is lower. The optimal DNA extraction method based on phenol in this study is useful tool which may apply for further molecular analysis studies using dried blood spot samples.
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