REN and Hypertension: The patient’s eGFR was calculated to be 18.1 ml/min/1.73 m2, which is considered stage 3 acute kidney injury. This decreased GFR can lead to an increased BUN/Cr ratio and increased renin release, manifesting as hypertension, which was also exhibited in our patient’s blood pressure readings as our patient is a stage 2 hypertensive.