Kidney Function Blood Test

This kidney function blood test helps detect a range of potential kidney-related health issues:

• Chronic Kidney Disease (CKD): High creatinine levels and a low eGFR can indicate reduced kidney function, a sign of CKD.
• Dehydration or Poor Kidney Filtration: High urea levels can suggest dehydration, poor filtration, or kidney stress.
• Protein Imbalance & Kidney Damage: Low albumin and abnormal total protein levels may indicate kidney disease.
• Liver-Kidney Connection Issues: Elevated ALT, ALP, and Gamma GT levels can point to liver dysfunction, which may impact kidney performance.
• Uric Acid Build-Up & Gout Risk: High uric acid levels may suggest kidney inefficiency in removing waste, increasing the risk of gout and kidney stones. High levels of Uric Acid have also been linked to the development of Atrial Fibrillation.

While this test can indicate an increased risk of kidney stones (due to high uric acid levels), it does not directly diagnose existing stones. If kidney stones are suspected, further imaging tests such as an ultrasound or CT scan may be required.

By analysing these biomarkers, this renal blood test provides a detailed picture of kidney health, helping to detect potential issues early so you can take proactive steps to protect your well-being.

Yes – our kidney function test can be done at home using a fingerprick kit. The kit comes with everything you need to collect a small blood sample from the tip of your finger.

We also offer the option to have a trained healthcare professional (phlebotomist) visit you home to collect the blood from your vein (called a venous draw).

Your kidneys filter waste, balance fluids, regulate blood pressure, and support red blood cell production. They also help maintain strong bones and overall well-being. Keeping them healthy with hydration, a balanced diet, and regular checks is key to preventing future issues.

Kidney disease develops when the kidneys are damaged by high blood pressure, diabetes, infections, or lifestyle factors like dehydration and poor diet. Because it often has no early symptoms, kidney problems can go unnoticed. Regular testing helps detect issues early, giving you the chance to take action before damage worsens.

Early kidney disease is often symptomless, but warning signs include fatigue, swelling, changes in urination, puffiness around the eyes, and high blood pressure. As kidney function declines, symptoms worsen. Regular blood tests can detect problems early, helping you take control of your kidney health before complications arise.

Stay hydrated, eat a balanced diet, and manage blood pressure and blood sugar levels. Avoid excessive salt, alcohol, and smoking while maintaining a healthy weight. Regular health checks help catch problems early, giving you the best chance to protect your kidney function and overall well-being.

Your results are delivered to your account and can be viewed on the Forth app. We aim to get your results to you 2 working days from the date your sample reaches our lab.

Once you place your order, your test kit will be dispatched the same day (if ordered before 3 pm on weekdays) via Royal Mail Tracked-24, meaning you should receive it within 1-2 days.

Your health score is a personalised rating based on your test results. Scores range from 0 (poor) to 100 (excellent). It helps you understand how well your kidneys are functioning and highlights any areas that may need improvement.

Health sores are included at no extra cost and can be viewed in our app.

If you have risk factors like high blood pressure, diabetes, or a family history of kidney disease, we recommend testing every 6 months. Regular checks help catch potential issues early, giving you the best chance to protect your kidney health.

Yes, all of our test kits are sent in plain, unbranded packaging for complete privacy. There are no logos or markings that indicate the contents, ensuring a discreet and confidential delivery. Your test results are also stored securely in your online account, accessible only to you.