AMR linearity Testing/ CAP

[ssnowy787]

Hello, I wanted to see what everyone’s process was like for their 6-month AMR testing for chemistry/ia. Since CAP requires linearity testing of low, mid, and high of the AmR, does anyone use vendor calibrators or purchasing linearity material (this costs thousands of dollars). For a lab that tests 100+ tests , this is extremely expensive and tedious to do every 6 months. Looking for any effective way to improve this process. Thanks. near to our linearity.
I am hoping to use Roche Calibrators. But there are only a handful that have a 
3-pt calibration. 
Do your customers have a similar process for their linearity testing? 
low, mid and high range that is near to our linearity.
I am hoping to use Roche Calibrators. But there are only a handful that have a 
3-pt calibration. 
Do your customers have a similar process for their linearity testing? 

[John Hansen]

My current lab is not accredited by CAP, so I don't know if CAP has changed requirements.

In 2024, when I was working at a CAP accredited lab, we would mostly use our calibrations to verify the AMR. We'd keep printouts of calibrations for each analyte to show that the AMR was verified by those calibrators. We had some analytes where the calibrators did not span the full range of the AMR. We'd usually get calibration verification samples from Maine Standards for those. I also had an analyzer that did 2-point calibrations, and the manufacturer had a kit for verifying AMR that we would purchase. For the analytes that needed additional samples, Maine Standards would statistically analyze our results and send those back to us, and the ones I got from the manufacturer, I'd put in Excel and graph them with a best fit line to show me slope, bias, and correlation factor.