Kidney function, eGFR and your medicines

What does eGFR tell you?

An estimated glomerular filtration rate, usually shortened to eGFR, is calculated using a blood test and helps clinicians assess how well the kidneys filter. The NHS explains that urine tests, including an albumin-to-creatinine ratio, can add important information. A clinician interprets the whole picture; a number viewed in isolation does not explain its cause.

If you are preparing for an appointment, keep the test name and date with the value. Bring previous results if available and ask whether the pattern has changed. Avoid comparing a number copied from one report with an undated screenshot of a different test.

Why medicines monitoring comes into the conversation

The NHS Specialist Pharmacy Service describes kidney function, potassium and sodium checks for ACE inhibitors and angiotensin receptor blockers, including medicines such as ramipril and losartan. Monitoring is individualised and can differ after a medicine is started or changed and during illness.

This does not mean that everyone needs the same blood panel or a new private test. Ask the clinician managing the prescription which checks apply to you and who will act on the results. Do not use a general internet table to change a dose yourself.

Prepare a useful account of what happened

Write a short timeline rather than trying to interpret each result. Note when treatment changed, when the blood sample was taken and what advice you received. Tell the reviewer about recent illness, hospital care and medicines or painkillers bought without a prescription.

If a result was taken before your latest prescription change, say so. If you cannot find a result, ask your practice or testing service for the report rather than entering a remembered value into an online form.

• Which result should we use when reviewing my medicines?
• Has anything changed enough to need a repeat test or earlier appointment?
• Which monitoring is due, and who will arrange it?
• What personalised advice should I follow if I become unwell?
• Who should I contact if I have not received the result?

Keep diagnosis and prescribing with your care team

A MedReview report can help organise medication questions from the information you provide. It cannot diagnose kidney disease, replace an assessment of an abnormal result or issue a new prescription. Share any existing monitoring plan with the reviewer so the report does not lose the context of care already under way.

Follow any urgent instructions from the clinician or laboratory responsible for your test. A routine online review is not a route for emergency assessment, and a reassuring-looking result should not delay help if you feel seriously unwell.