Antibody storage - (Feb/23/2009 )

Hello,

i have a quick question regarding long term storage of antibodies. My previous supplier stated in the datasheet: mix with equal amount of 99% glycerol and freeze aliquots at -20°C. Now i ordered antibodies from sigma and they don't say anything about adding glycerol...does that mean I can just freeze the antibody in aliquots without glycerol?

Thanks Stardust

store them the way the provider recommends.

they have tested and approved the conditions.

if you store differently then you void any warranty that the company gives.

Ok thanks for your answer!

Stardust

My ex PI would always tell us to freeze antibodies at -20C no matter what the data sheet says.

scolix on Feb 28 2009, 09:05 AM said:

Same as mine. The company tell you to store the ab at 4C, and it is stable for months because they want to sell more.

I store antibodies as prescibed in the insert and I've never had problems before the exp.date even allmost every antibody was useable long after the given exp.date.

Thanks for all your answers! I have frozen it now in aliquots at -20°C...

Stardust

I would agree whit Gerard, as I stored some Abs at 4 (as recommended by the supplier) and every single one is still perfectly working, over 1 year later.

madrius1 on Mar 2 2009, 07:01 AM said:

yup, our Ab remain powerful after storing at 4C for over 3 yr. The datasheet suggest us to store at 4C for no more than 1 yr. As a matter of fact, those suppliers want to sell as much Ab as they can.

Nrelo on Mar 3 2009, 05:11 AM said:

I cannot not agree with you that always store at -20. If the data sheet said donot freeze the antibody, you still freez it anyway? I believe it depend on how the manufactory purified the antibody, especially the storage buffer. I think the smart way is follow what they suggested.