What should you know about eGFR and chronic kidney disease?

The result is calculated from a blood test, together with factors such as age and other clinical information. It is an estimate rather than a direct measurement, so one result needs context. A repeat test can show whether kidney function is stable, changing, or affected temporarily by illness, dehydration, or medicines.

Chronic kidney disease means kidney changes or reduced function that persist over time. Some people have no symptoms at first. As kidney filtering becomes less effective, waste and fluid balance can change, and problems such as fatigue, excessive thirst, anaemia, gout, hypertension, or restless legs may occur. Type 2 diabetes and hypertension are common conditions clinicians review when assessing kidney health.

Keep follow-up blood and urine tests as advised, and take prescribed medicines according to the plan. Bring a complete list of medicines, supplements, and pain relievers to appointments because some products can affect kidney function.

Ask which eGFR trend matters for you, whether urine testing is needed, and how to manage blood pressure, diabetes, salt intake, fluids, and exercise safely. Do not make major fluid or diet changes without personalised advice.

Contact a clinician promptly for much less urine, new swelling, worsening breathlessness, repeated vomiting, confusion, severe weakness, or chest pain. Seek urgent help for severe breathlessness, collapse, or sudden confusion. These symptoms can have several causes and should not be judged from an eGFR number alone.

Ask: What is my eGFR trend? Do I have protein in my urine? Which medicines should I avoid or adjust? What blood pressure and diabetes targets apply to me? When should my tests be repeated?