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.
Storing dna at room temperature.
They recovered high quality rna from the freeze dried samples showing that lyophilization may be a cost effective way to store rna and dna samples.
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.
However such dna samples need to be.
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.
Some studies indicate that dna can be satisfactorily kept at room temperature and 4 c.
In the case of chemically preserved dna you re able to do multiple hydration dehydrations.
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.