My lab adds EDTA to all samples before Luminex single antigen testing (we use LABScreen). Currently the techs measure out the sample into a new tube and use a pipette to add the appropriate amount of EDTA to each one. However, it takes a lot of time to label the new tube and do the pipetting. We are trying to figure out how to make the entire process less time consuming.

We were thinking about doing something like estimating the volume of serum in each tube and adding EDTA directly to the original tube. But I am wondering if anyone can share how their lab does it or provide any hints for how to simplify it further. 

And if anyone has any suggestions for how to make adsorbing sera any simpler I would greatly appreciate that as well.

Thanks!

Susan