hi

I do not think it's a problem, except for proteins :

1- that have a low stability

2-  short half life

3- if you want to work on proteins function

For example, you will not have a problem with Albumin, but you will probably be difficulty with  coagulation factors ( such as FVIII or FVII ).

It's completely different from protein to protein.

good luck

what about myokines 

what about irisin ?

hi

I have no experience in this. But it's probably a problem with myokines, which is a small cytokine, but I do not think it's an issue with the Irishman. Compare the test for more certainty with a fresh sample and a frozen sample.

good luck

hi 

you can easily use pre-test before main analysis.  

just use the small part of your stocked solution  for protein assay with new blood sample from the same species with same conditions . 

Thanks a lot for the answers

You should have no problem for an sort of protein  and DNA assays .