We are having pick up problems when trying to introduce third party controls for serology assays on the Cobas e 602, A CPA/UKAS regulatory stipulation on us. Think it is seeing no liquid rather than seeing a clot or bubble.
We have had similar problems with External Quality Assurance programme samples not being picked up every time, and we have tried different makes of third party controls and sometime it works and sometimes it won't pick up, the same control my be picked up on one run but not the next.
But we do not have a noticable problem picking up real samples, any ideas? or any recommendations of third party controls that work well, particularly for the blood borne viruses
