Hi Raya

keeping safe samples in tubes during days is never good for further analysis. the best way therefore in your case is to use tubes as the PAXgene tubes from BD, but it's expansive:

https://www.bdbiosciences.com/en-us/products/blood-collection/blood-collection-tubes/paxgene-blood-rna-tube.762165

all th ebest

fred

Thanks frederic

but like this tubes not available in iraq

what about using rna shield ,trizol, rnalate??

rnashield and trizol is available

is there any effect on quality of results

Hi Raya

I don't know rna shield but it's sold to keep samples at room temp (4-25°c) for 30 days, 3 at 37°c.

it depends therefore on your weather, a key point I didn't notice.

rna shield should therefore be fine.

all the best

fred

Thanks a lot