This proprietary technology proved to be a breakthrough in the development of the multitarget stool DNA test. Our scientists needed to first solve the essential problem of effectively isolating DNA from stool before achieving the goal of developing a noninvasive colon cancer screening test.
The development of an enhanced DNA stabilizing buffer was a critical step in the process of creating a reliable at-home screening kit. With this advance, the DNA in stool samples is protected through the transport process and remains amenable to analysis once it arrives at our processing center.
We developed our proprietary QuARTS technology (Quantitative Allele-specific Real-time Target and Signal Amplification) which efficiently amplifies and quantifies two separate methylated DNA markers (NDRG4 and BMP3) along with seven distinct KRAS gene point mutations. The beta actin (ACTB) gene serves as a reference marker for quantitation of the total amount of human DNA in each sample.
The final step in the multitarget stool DNA test incorporates the quantitative results from the DNA alterations combined with the protein biomarker detection to determine a positive or negative result. This algorithm is the vital workhorse that translates our invisible biology into actionable information.
We improved upon the technology for the ELISA-based detection of a protein biomarker (hemoglobin) through an additive in the stabilization buffer. This innovation allows for longer transit time from sample collection to processing by the lab.