The GeneFiX™ Saliva DNA collectors are trusted worldwide to provide high yields of quality DNA, but if you need even more DNA, we have introduced The ‘Xtra DNA Collect’ – designed to collect 3ml of Saliva thus improving yields over the standard GeneFiX™ and 1ml and 2 ml collectors. Our high performance buffer has been concentrated to allow collection of 3ml saliva samples into just 1ml of buffer, increasing yield by up to 50% for all your tricky donors or for further downstream testing