My mom is a kidney patient with a GFR of27 and...

Treatment of high kidney function:
Actually, an examination by a specialist internist and nephrologist with the necessary medical examinations to determine the pathological problem, such as cases of urethral obstruction, which are treated by surgery, or other cases, such as cases of internal kidney failure due to a lack of functions, which are treated by medication. Treatment choices differ based on the situation, such as stopping any treatment that causes renal failure and causes blood pressure, diabetes, or other pharmaceutical therapy regimens to be disrupted. Following the treatment recommendations of a professional specialist on a regular and ongoing basis. Dialysis may be employed in the event of acute failure, non-responsiveness to therapies, or a significant increase in the proportion of tests, as well as in the event of kidney failure.
What can cause high albumin levels ?
The protein albumin is found in the blood. Albumin from the blood is not allowed to flow into the urine by a healthy kidney. Albumin is excreted in the urine by a damaged kidney. The lower the albumin concentration in your urine, the better.
Increased blood albumin levels can be caused by dehydration, a high-protein diet, or wearing a tourniquet for a lengthy time when drawing blood.
What are the signs and symptoms of renal failure?

• Fatigue and exhaustion
• Anemia
• calcium deficiency
•  buildup of fluid.
• Osteoporosis is a disease that affects the bones.
• calcium deficiency
• alterations in the skin
• Other signs and symptoms

In your instance, a medical evaluation and follow-up with a professional doctor are recommended.