Aliquots of assays from completed genotyping projects are stored onsite indefinitely. If you have additional samples that you wish to have genotyped with these existing assays, and there is stock remaining of the original aliquot, you will not be charged for a new assay aliquot and will only be charged for the genotyping service. If there is insufficient assay left to genotype all of your additional samples, you will be charged an assay re-stock fee.