Acute Renal Failure vs Lab Error...

Just got back in from my husband's nephrology appointment in Newark. The doctor was very courteous and professional. My husband's cardiac catheterization is on hold because his creatinine level jumped up to 2 . 34 in less than a month. He has had an arteriogram to check on the blockage in his legs...plaque goes everywhere..it doesn't care. That contrast is nephrotoxic as well as some of the meds he was taking...until today. He goes for STAT blood work in the morning and has to schedule a renal arteriogram and ultrasound AS A P. Man...I'm beginning to think that cars aren't the only things with warranties...