Hello all,

We are looking for larger tubes than our normal 12x75 tubes to use when performing adsorptions.  I'm finding that a lot of serum glass vacutainer tubes, that would be the perfect size (16x100), are silica-coated.  Would this silica coating interfere with any of our adsorptions or post-adsorption testing?  Thanks!

I don't know if/how silica might affect testing, but I think that might only apply to the stopper, not the tube proper.

You could certainly use regular 16 x 100mm (borosilicate) tubes, rather than the "vacuum" versions. We get generic tubes from VWR, cat # 47729-576.

Depending on the concentration of the silicon coating in the tube it could certainly have an affect on anything you do in IH.  Be very careful about the validation you do

On 11/23/2017 at 3:07 AM, galvania said:

Depending on the concentration of the silicon coating in the tube it could certainly have an affect on anything you do in IH.  Be very careful about the validation you do

Just to clarify......you have "validated" test tubes ? What was involved ?

I can't go into detail - but just make sure you don't get false positive reactions

22 minutes ago, galvania said:

I can't go into detail - but just make sure you don't get false positive reactions

Are you talking about "vacuum" blood collection tubes or just regular test tubes ?

Not blood collection tubes, no.