A 32-year-old woman comes to the office for a routine diabetes follow-up. She was diagnosed with type 1 diabetes mellitus at age 12. She reports no new symptoms and takes no medications other than insulin. Her blood pressure is 128/78 mm Hg. Physical examination shows mild background diabetic retinopathy on fundoscopic examination. Laboratory studies show:
Serum
Creatinine 0.8 mg/dL
Hemoglobin A1c 7.1%
Urine
Albumin-to-creatinine ratio 45 mg/g (initial screening 4 months ago: 45 mg/g)
Estimated glomerular filtration rate (eGFR) 95 mL/min/1.73 m²
Which of the following best describes this patient's current kidney status?