Millions may have undiagnosed kidney disease, alarming study reveals

Chronic kidney disease may go undetected far more often than previously believed. A new study highlights a significant gap between test results and actual diagnoses. The findings raise concerns about missed opportunities for early treatment. The research, published in Deutsches Ärzteblatt International, analysed data from the NAKO Health Study. In a group of 5,000 people, irregular kidney function appeared in blood tests, yet only 875 had a recorded diagnosis. A separate review of 195,000 adults produced similar findings.

In another sample of 35,500 individuals, 17.5% showed signs of kidney impairment or damage in urine tests. However, just 4% of those with abnormal urine results reported a diagnosis. While a single test does not confirm chronic kidney disease, further checks often verify early warnings.

The study confirms that undiagnosed kidney disease can worsen over time. Without intervention, severe cases may eventually require dialysis or a transplant. Early detection through blood or urine tests can help prevent or delay serious complications. The research underscores the need for follow-up examinations when initial results are abnormal. More awareness could reduce the number of undiagnosed cases.