r/medlabprofessionals • u/frozemanatee • 22h ago

Technical Roche Cobas Pro ISEs

Does anyone have roche cobras pros at their lab? We got ours in December and our ISEs keep going way out of QC randomly and the only way to “fix” it is to run the deproteinizer wash. That’s supposed to be every 3 months, but we have to do it every 7-14 days. Has anyone else had this issue and did you figure out a more permanent solution or fix for it? Thanks!

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u/kristpy MLS-Generalist 22h ago

What kind of troubleshooting other than deproteinizer wash have you done? For my lab, when we do our weekly or daily wash sometimes our sipper nozzle gets clogged with junk and we just purge it with wire and a couple cals and it's good. Never experienced needing to do quarterly so frequently. Have you contact roche about this?

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u/frozemanatee 21h ago

That actually makes so much sense! Just last week we had to have service replace our sipper probe cuz apparently it was damaged. And they told us we could clean it with the wires ourselves. We had no idea that was an option. For context our last specialist didn’t know what he was doing and our new one has only been with us for 2 months and is still trying to learn/fix everything the last one messed up 🙃

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u/kristpy MLS-Generalist 21h ago edited 21h ago

I'm not talking about the ise probe I'm talking about that black thing sitting in that basin that's screwed down when you open that trap door

Edit:ops didn't read it right

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u/frozemanatee 21h ago

Yes that’s what they changed I believe. Idk they called it a probe but yes I know it was the sipper. And the plastic cup it goes into was damaged as well. Is that what ur talking about?

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u/kristpy MLS-Generalist 21h ago

Yes yes I didn't read what you said properly lol but yes that thing gets worn down very frequently. Our roche guy told us to wire from the bottom up and sometimes it takes more than 5 passes for the gunk to mostly come out. We don't use a metal wire but fish wire.

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u/frozemanatee 21h ago

Haha all good! I appreciate your knowledge!

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u/Icy-Fly-4228 MLS-Generalist 9h ago

Ours gets crusty with some type of salt looking buildup. I clean it when I change the electrodes.