For longer term storage blood should be stored at 4 c or 80 c studies have shown that good quality dna can be obtained from blood stored at 80 c 9.
Storing dna at room temperature.
Dna stored dry at room temperature on whatman cards can be reused by taking a fresh punch from the card each time.
In the case of chemically preserved dna you re able to do multiple hydration dehydrations.
If you feel uncomfortable storing at room temperature or 4c then it is best to follow ingeborg s advice and make aliquots unused portion of aliquots can definitely be stored at 4c until completely.
Similarly individual wells from genplates can be sampled without disturbing other wells.
Studies have shown that blood can be stored for up to 24 hours at room temperature prior to purification but if possible it should be placed on ice.
Researchers from the university of debrecen in hungary recently freeze dried whole human cells and stored them at room temperature for up to two months 1.
Genvault has developed a suite of products that includes genplates gensolve gentegra tubes and genconnect to store and manage biosamples dry and at room temperature 25 c.
Such samples were kept in te buffer and were stable for 6 to 12 months.