Ultra Keto Fuel The laboratory or doctor can calculate the estimated LFG using information from the patient's blood work. This is not accurate in patients younger than 18 years, pregnant patients, and very muscular and very obese people. The doctor will use the stage of kidney disease to recommend additional examinations and advice on managing patients.Electrolyte levels and acid-base balance: Kidney dysfunction causes electrolyte imbalances, especially potassium, phosphorus, and calcium. High potassium (hyperkalemia) requires special attention. http://www.10000kidsproject.com/