EurekAlert! -- A screening test that measures whether a patient’s heart is healthy enough for a kidney transplant is not as dangerous as once thought, according to a study appearing in an upcoming issue of the Clinical Journal of the American Society Nephrology (CJASN). The findings indicate that the test, called coronary angiography, does not cause a decline in kidney function for patients with advanced chronic kidney disease (CKD) and can help determine when to schedule a patient for transplantation.