Chose your sequencing provider(s) and contact them, they will tell you how to prepare and ship your samples with some guaranty of the best results.

Agree. Usually by using FEDEX should works. Best.

I usually dehydrate my samples before I send them abroad by courier.  By the way, Macrogen in Korea are very reliable and closer to you.

Hong Kong FdeX cannot deal with DNA sample in solution, neither did DHL.

May I know if the dehydration will cause some side effect on the quality of DNA? cause we have to ensure DNA quality in order to ensure the quality of sequencing.

I never found a problem - shipping DNA (not pcr products ) fully hydrated in TE buffer - in a padded envelope by courier (I use TNT)

pcr products I prefer dried down or dry ice to avoid spillage 

I used to add the DNA on clean filter paper ,then circle with pin around it ( avoid touching the sample), let it dry then inserted in a zip-bay and seal it.

you can send it in a regular small envelop !.

Hi Yu XIa, 

We use dry ice for shipping the DNA/RNA samples (especially for metagenomic or metatranscriptomic work). 

Even with Fedex it takes some time 72 hrs.  So you need at least 10 lbs of dry ice. 

I hope it helps 

Cheers

Totally agree with John. If I were you, I would contact Macrogen first since it's a very good choice, they cover the shipping fees and they are much closer to you. I have experience with them performing RNA-seq with very good results.

Macrogen in Korea  or GeneWiz in the USA  is good  and they provide a quick turn around time. Contact them or visit their website and they will guide you through the preparation and  submission process.