Does vip (vasoactive intestinal peptides) have to be out on ice imediately. if done incorrect would you get false high or low?

If it's going to be: Stored it needs to be kept on ice then frozen. However, once the blood is drawn, it is always better for it to be put on ice. What actually disturbs the results, could be the technique used in the washing, essentially the "lab" section. Most of the time the lab techs have done this for years and are capable of producing good results. If you are not satisfied, have it repeated.