1st April 2022

A 58-year-old lady with long-standing type II diabetes presents to her GP

A 58-year-old lady with long-standing type II diabetes presents to her GP, complaining of fatigue and ankle oedema. Routine blood tests are taken, including urea and electrolytes. Some days later, these results are returned, displaying a raised serum creatinine. An estimated glomerular filtration rate is calculated as 48ml/min/1.73m². Routine blood tests taken four months before show the eGFR was 59ml/min/1.73m². The GP suspects chronic kidney disease. Which of the following investigations would be most appropriate in confirming this diagnosis and staging the kidney damage present?

Select the SINGLE most appropriate option from the list below. Select ONE option only.