We send you a DNA collection kit so that you can collect your cheek cells and send them back to the YSEQ laboratory. We'll then extract high quality DNA and verify the size distribution in an agarose gel. The yield will be about 5 ug of genomic DNA per collection brush in 50 .. 150 ul volume. If you need more genomic DNA or higher concentrations please contact us so that we can verify the specifications. We can send the extracted DNA back to you or to a laboratory of your choice. Please consider regulations for sending out biological material to other countries.