With space missions becoming longer and more common, astronauts  will require a range of diagnostic tools to monitor their health, including  urinalysis kits. Urinalysis is a standard diagnostic tool for various health  conditions, from metabolic issues to kidney function abnormalities. While kidney function in space has been studied, in previous studies, urine  samples were collected in space and analyzed back on Earth. In this study, ACR (albumin-to-creatinine ratio) urine tests were administered in space with  the results available in real time, allowing astronauts to independently  monitor their kidney function.