Istat Chem8 TCO2 QC <>

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Hi all,
Recently we have been seeing an increase in TCO2 failures for L3 QC (Lot# 321174) on our Chem8 cartridges.  Has anyone noticed an increase in your TCO2 failures?  This is unusual for us for TCO2 and I wanted to see if it was just us.  We did put a call in to Abbott to let them know also.

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Hello,
Yes, I have noticed problems as well, I am glad you mentioned it. I am using Chem 8 Lot#H24305 and H24307. I use Eurotrol QC material and I was having problems with Level 1 and Level 2. I repeated them and recalculated my means but I did find that unusual due to the fact that I almost always have QC pass. I also had patients with more "***" errors for TCO2 and after looking at it just assumed it was operator error. I had 5 patients with "***" errors  for Lot H24305 during a two day span with a total of 22 patients ran. That comes up as an error rate of 22%, I thought that maybe it was just one particular box of the Chem 8's. I will also call Abbott. 

Yes, I am seeing the same issue with Abbott's TriControl Cal/Ver lot #24057 (CLEW 49). I had used this lot on CLEW 48 without any issues, but the range is lower for CLEW 49. I typically see my level 3 run on the low end of TCO2, but not actually be out. This same problem occurred a few years ago with no resolution from Abbott, but hopefully they will be more helpful this time. I haven't called it in yet, but I will.

I am not seeing this here.   Reagent lot is older (very low volume here)  - Lots in use in use since Aug with A48 and A49 ( after 11/21/24 CLEW update) are H24159 and H2421.  Use APOC controls and val vers -  Tricontrol level 1 and 3 and Tri control Cal vers.    

We have also been seeing the TCO2 failures when run as a control. Someone told us to run as Linearity/CalVer and then we do get a numerical result to compare to the value assignment range.

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