desperate

hi guys please help me, i cant get to the final answer i keep getting a negative….

After examining Sally-Anne’s symptoms, her nephrologist requested further tests. The results of her Serum Creatinine test and Creatinine Clearance test gave a GFR value of 20. The following graphs show some relationship between Serum Creatinine, Creatinine Clearance and eGFR (estimated...