Different approaches for targeted genotyping are available.
PCR amplicons combined with Qiaxel gel electrophoreses analysis or Sanger sequencing can be used for genotyping a limited number of variants on a limited number of samples.
Taqman assays are used when genotyping a limited number of variant on many samples.
Multiplexed PCR amplicons combined with high throughput sequencing can be applied when genotyping a medium number of variant on many samples.