‚??You can‚??t have a testimony, if you don‚??t have a test,‚?ù 46-year-old Sarah Gamble says. Ten years ago, Sarah’s family was changed forever when her daughter became pregnant during her freshman year of college. From the start, Sarah, better known as ‚??Memaw,‚?ù took in Cameron Powell, her daughter‚??s child, so that she could finish college. Weeks later, Cameron was diagnosed with Bartter syndrome, a rare kidney disease that UNC Hospitals had not seen in over 30 years.