We have developed and tested technologies to facilitate POC monitoring.Patient-directed POC collection of dried capillary blood (DCB) using Tasso-M20 (Tasso, Inc., Seattle, WA, USA) avoids venipuncture and the need to travel to a laboratory or clinic.The device collects volumetrically controlled dried blood samples.To establish the sensitivity of DCB for e13a2 and e14a2 BCR::ABL1 transcript monitoring we compared results collected using the TassoM20 device to routine standard of care BCR::ABL1 transcript.Monitoring performed on venous blood at a CLIA certified clin. lab at Fred Hutchinson Cancer Center (Fred Hutch).Twenty patients were enrolled on Fred Hutch protocol RG1004335.The study was performed in accordance with the Declaration of Helsinki and informed consent was obtained.Clin. BCR::ABL1 transcript monitoring was performed using Xpert BCR-ABL Ultra (Cepheid), which requires 4 mL of venous blood.The assay detects BCR::ABL1 transcript types e13a2 and/or e14a2 and results are expressed as BCR::ABL1 to ABL1 percent (IS standardized).The Tasso-M20 device collects 70μl of capillary blood in 4 volumetric tips, which then dry.To simulate the time for shipment and transportation expected in real-world applications, Tasso-M20 samples were sent to the laboratory, maintained at room temperature, and processed within two weeks of collection.Patient samples were obtained between Oct. 1, 2020 and Oct. 31, 2021.Median age was 51.5 years (range, 28-83 years) and 55% were female.The ethnic and racial distribution of patients reflected regional demographics and included 5% American Indian or Alaska Native, 15% Asian, 5% Black or African American, and 5% Hispanic or Latino individuals.There was a strong correlation between the BCR::ABL1 transcripts in capillary vs. venous blood.DCB provides excellent sample stability and is a cost-effective home diagnostic.