Creatinine level on Siemens DCA is 265.8 mg/dl, how to interpret the DCA result?

Have a home DCA to monitor Creatinine. Levels from Quest are 1.4 and the DCA level is 265.8 mg/dl. I don’t know how to interpret the DCA result.. I have done optical and high low and they are within range. I don’t know what to try next