Hi Rob
Thank you for your communication recently regarding the Weqas co-oximetry samples and the Radiometer ABL 90 issues.
We noticed this phenomenon in June of this year following feedback from a few participants. We immediately reported this to the vial manufacturer and Radiometer, both of whom worked with us to investigate the root cause. We also contacted all affected parties personally to keep them informed of progress. I'm sorry, I hadn't realised you were also having problems or I would have contacted you also.
The root cause appears to be a cryoprotectant agent that interfered with the glucose and lactate sensors on the ABL90. We have been using co-oximetry material with cryoprotectant for over 15 years, without any issues, however, the cryoprotectant in the material appears to interfere with the glucose and lactate sensors in the Radiometer ABL 90. As stated, as soon as we realised there was an issue we contacted both the vial manufacturer and Radiometer to try and resolve the problem.
The resolution has been a re-formulation of the material. One level of this material (in a new style vial) was sent out for evaluation with the September Co-oximetry distribution. This new formulation will be further evaluated across 3 levels in January 2016; a whole distribution will be replaced with new formulation.
Feedback from the trial suggests that the new formulation has fixed the calibration issues, and indeed we have had individual laboratory feedback that the calibration issue was not seen in this distribution.
The current formulation can also be assayed without issues if there is a 15-20 minute gap between EQA sample analyses. During this time the analyser is available for assay of patient samples. This has been tested and confirmed by one of our larger sites, but of course we appreciate that this is a cumbersome process and the time taken to do this means this may not be a viable option for sites that have many analysers to EQA. Hence, the new formulation has been developed within a very short period to avoid prolonged issues.
As other ABL90 users have reported, a re-calibration can fix the issue in some cases. Other analysers seem to need a few calibration cycles. Another option may be to select and run extra rinse cycles (Menu / Start Programs / Auxiliary Programs / Rinse).
We are committed to ensuring that we can come to a speedy resolution, and hope to move over completely to the new formulation by April 2016, or possibly continue from January 2016 if the trial goes well. Please be assured that we are working on this as a priority.
Thank you
Kind regards
Sam
Please feel free to email me directly should you wish to discuss any of the points raised.
Samantha Jones
WEQAS Laboratory Manager
Unit 6
Parc Ty Glas
Llanishen
CF14 5DU
+44 2920 744301
[log in to unmask]
-----Original Message-----
From: ACB Point-of-Care Testing [mailto:[log in to unmask]] On Behalf Of Lockett Patricia (RR7) Gateshead Health
Sent: 30 October 2015 10:26
To: [log in to unmask]
Subject: Re: ABL90 Weqas issues
Hi,
Have you tried calling Radiometer, as they may know.
Trish
-----Original Message-----
From: ACB Point-of-Care Testing [mailto:[log in to unmask]] On Behalf Of Rob Bolton
Sent: 28 October 2015 10:29
To: [log in to unmask]
Subject: ABL90 Weqas issues
Hi All,
I know this topic has been mentioned before - How WEQAS Cooximetry temporarily knocks out the Glu/Lac on the Radiometer ABL90 flex analyser. Does anybody have a quick fix to get them up and running quickly again? we have tried numerous combinations of putting fluids through /calibrations/jumping up and down - I was wondering if anyone has an effective method of correcting this?
hope you can help
Rob
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