Clonal genes have a minimum guaranteed yield of 50 ng. In a few cases, after sequence verification by NGS, we are unable to meet this minimum yield; however, we will still ship all the material we are able to recover. For these constructs, you will see "NA" for the yield. You can try to rescue the construct by transformation into bacteria (please contact Customer Support for more information). You will not be charged for constructs that do not meet minimum yield.