Fingerstick Potassium/Creatinine Meter

A disposable test strip and a handheld reader that measure potassium and creatinine from a single fingerstick drop, for use by clinic staff during the visit. The problem it addresses is narrow and real: heart-failure and kidney-disease patients are put on RAAS-inhibitor drugs that have to be dose-titrated against their potassium, and today that means sending the patient for a venous blood draw and waiting for the lab, so the dose decision happens days later or not at all. The distinctive engineering choice is a third channel that does nothing but detect whether the sample was damaged during collection — a fingerstick squeezes red cells and releases potassium, which reads as a falsely high result — and suppresses the potassium value rather than reporting it. It is aimed at outpatient clinics, not emergency or dialysis settings, and would be billed through the existing clinical laboratory fee schedule rather than a new code.