A New Blood Test for Kidney Disease? Here’s What You Need to Know

For 537 million people worldwide living with diabetes, kidney disease is one of the most serious and life-threatening complications.

And because early-stage chronic kidney disease (CKD) has no symptoms, many patients don’t realize they have it—until it’s too late.

But a new blood test, called PromarkerD, could change that.

According to a new study from the University of Western Australia, this test outperforms conventional methods in detecting kidney disease years before symptoms appear.

If these findings hold up, PromarkerD could revolutionize diabetes care—catching kidney damage before it becomes irreversible.

But should we get too excited just yet?

Right now, doctors use two main tests to assess kidney function in people with diabetes:

eGFR (estimated glomerular filtration rate) – measures how well your kidneys filter waste.

uACR (urinary albumin-to-creatinine ratio) – checks for protein leakage in urine, a sign of kidney damage.

Both tests are far from perfect. Many cases of kidney decline slip through the cracks, meaning people don’t realize they have a problem until they’re facing dialysis or a kidney transplant.

But PromarkerD takes a different approach.

Instead of looking at kidney damage after it happens, it detects biomarkers in the blood that predict future kidney function decline.

In a four-year study of 857 adults with type 2 diabetes, PromarkerD identified:

• 84% of patients who had normal kidney function but later developed serious decline.
• Fewer false positives compared to current tests, meaning fewer unnecessary scares.
• An impressive accuracy score (AUC of 0.88), far outperforming standard methods.

In short? This test doesn’t just detect kidney disease—it predicts it.

Kidney disease doesn’t happen overnight. It develops silently, often with no symptoms until the damage is severe.

Once kidney function declines, there’s no going back. The earlier we can catch it, the better.

That’s why a test like PromarkerD—if it works as advertised—could be a game-changer. It could give doctors a critical head start in treating kidney disease before it’s too late.

And for patients, early intervention means more options:

• Lifestyle changes (diet, exercise, stress management)
• Natural kidney-supporting supplements (like astragalus, curcumin, and NAC)
• Adjusting medications before irreversible damage occurs

Now, before we crown this test a medical breakthrough, let’s pump the brakes. First of all, it’s still early days. While this study is promising, real-world results matter more than lab data.

And the big question: Will it be accessible? A test is only as good as its availability. Will it be widely adopted, or will cost and Big Pharma interests slow it down?

Plus, we’re still in need of long-term data. Does PromarkerD actually improve patient outcomes in the long run? Time will tell.

We’re watching this closely—and so should you.

A more accurate, early-detection test for diabetic kidney disease could save lives. But until we see it in action outside the lab, we’re keeping our excitement measured.

We’ll continue to track this research and provide updates as they come. Because when it comes to your health, knowledge is power—and you deserve the facts, not the hype.

To protecting your kidneys,

Rachel Mace
Managing Editorial Director, e-Alert
with contributions from the research team

P.S. Are forever chemicals putting your kidneys at risk? Find out here.

Sources:

Western. (2025, March 11). A new blood test to detect diabetic kidney disease outperforms standard of care tests. Medicalxpress.com; Medical Xpress. https://medicalxpress.com/news/2025-03-blood-diabetic-kidney-disease-outperforms.html