Mutation scanning and mutation testing can be used to identify pathogenic mutations. What is the essential difference between these two approaches?

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The Answer is In mutation scanning, the object is to seek out any candidate pathogenic mutations in a defined region of DNA (usually an exon or gene), or even in an exome or genome, without having prior knowledge of the nature of the pathogenic mutation(s). For example, DNA sequencing assays can identify changes in a desired DNA region, exome or genome. By looking at how the DNA sequence differs from reference sequences candidate pathogenic mutations can be identified, such as obviously inactivating mutations in coding DNA in the case of recessive disorders.
In mutation testing, the object is to identify a defined DNA change at a specific location in the DNA, usually a well-studied mutation. For example, we might wish to test a cystic fibrosis patient for the p.Phe508del mutation in the CFTR gene.

Mutation Scanning and Mutation Testing Can Be Used to Identify