From Diabetes to Kidney Disease: What Filipino Patients Need to Know

Your kidneys filter blood through millions of tiny vessels called glomeruli. High blood sugar over years damages these vessels. As they get damaged, they:

• Leak protein into urine (the earliest detectable sign)
• Filter blood less efficiently
• Become permanently scarred over time

This process is called diabetic nephropathy or diabetic kidney disease. It usually develops 10 to 20 years after the start of diabetes, but the speed depends on how well sugar and blood pressure are controlled.

The scariest part: there are no symptoms in the early stages. By the time you feel something (swelling, fatigue, changes in urine), significant damage has already happened.

The earliest detectable sign of kidney damage is a small amount of a protein called albumin leaking into your urine. Doctors call this microalbuminuria.

A simple urine test, called UACR (Urine Albumin-to-Creatinine Ratio), catches this leak years before any other sign appears.

UACR catches damage that bloodwork alone (creatinine, eGFR) often misses. This is why every diabetic should ask for it specifically. Many doctors order routine bloodwork without UACR, and the early warning gets missed.

1. 1

   Serum creatinine with eGFR. Blood test for filtering function. Cost: roughly ₱150-400. Covered by most HMOs and many PhilHealth packages.

2. 2

   Urine UACR. The microalbuminuria test. Cost: roughly ₱400-700.

3. 3

   Urinalysis. General urine screen for blood, protein, infection. Cost: roughly ₱100-200.

4. 4

   Blood pressure measurement. At every diabetes follow-up. Target usually under 130/80.

• Type 2 diabetes: start kidney testing at the time of diagnosis. Damage may already be present.
• Type 1 diabetes: start kidney testing 5 years after diagnosis (in adults), then yearly.
• Children with diabetes: discuss with a pediatric endocrinologist.

If you are over 40, have prediabetes, or have a family history of kidney disease, talk to your doctor about baseline kidney tests even before any formal diabetes diagnosis.

If your tests are normal, keep them that way:

• Tight sugar control. Aim for HbA1c under 7% (your doctor may set a different target).
• Tight blood pressure control. Under 130/80, stricter if albuminuria is present.
• ACE inhibitors or ARBs if prescribed. These BP medications protect kidneys beyond just lowering pressure.
• Discuss SGLT2 inhibitors with your endocrinologist. A newer class of drugs (empagliflozin, dapagliflozin) with strong evidence for slowing kidney damage in diabetics.
• Avoid habitual NSAIDs. Mefenamic acid (Ponstan, Dolfenal), ibuprofen (Medicol, Alaxan FR), naproxen (Skelan, Flanax). Paracetamol is safer for routine pain.
• Quit smoking. Smoking accelerates diabetic kidney damage independently of every other factor.
• Maintain a healthy weight and stay active.

If your tests already show damage:

• All of the above, with more discipline.
• Stricter BP control (often under 125/75 if you have albuminuria).
• See a nephrologist for monitoring.
• Diet adjustments (a renal dietitian can help).

Do not wait for symptoms. By the time symptoms appear, you have usually lost 60% or more of kidney function. Booking a nephrologist consultation when your tests first show concern is the difference between holding stable and losing kidney function for the rest of your life.