Countable Labs introduced a single-molecule PCR counting approach designed to improve sensitivity and run-to-run reproducibility versus statistical-inference methods. The company’s platform targets common bottlenecks in rare-event quantification, including viral vector impurities and minimal residual disease measurements where ambiguous Poisson-corrected estimates can limit decision thresholds. The emphasis on direct molecule counting is positioned as a way to reduce measurement variability across labs and better support quality control in clinical and manufacturing settings.