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Variability by number of copies of PCR

Dear I need some wisdom in relation to the Number of Copies affect the result, because I received my last PCR RM 4.5, the same response of the last exams, with a sample of very few copies (57500 copies), the least amount since the diagnosis ) and I distrust the result, does anyone know about it? The number of copies is related to the BCR ABL result, I see that when the number of copies goes down, the BCR ABL goes up, I appreciate the information, I attach data

Date % BCR-ABL Copies Response
03/13/2018 58 193000 DX
08/21/2018 0.028 151000 RRM
02/07/2019 0.022 85200 RRM
06/06/2019 0.0098 160000 RM4.0
03/10/2019 0.0035 165000 RM4.0
03/12/2020 0.0063 78300 RM4.0
08/25/2020 0.0032 91000 RM4.5
03/11/2021 0.0041 60500 RM 4.0
08/19/2021 0.0018 169000 RM4.5
02/08/2022 0.0018 112000 RM 4.5
08/31/2022 0.0031 57400 RM 4.5