Urea is a waste marker that helps check kidney function and hydration.
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Clinicians order urea to check kidney function, hydration, and protein breakdown. It helps monitor chronic or sudden kidney issues and guide care decisions. People at risk of kidney disease, on high-protein diets, or with dehydration may benefit. You can test this marker with Aniva across Germany and Finland.
Clinicians order urea to check kidney function, hydration, and protein breakdown. It helps monitor chronic or sudden kidney issues and guide care decisions. People at risk of kidney disease, on high-protein diets, or with dehydration may benefit. You can test this marker with Aniva across Germany and Finland.
High: May reflect reduced kidney filtering, dehydration, high protein intake or supplements, tissue breakdown, gut bleeding, or medicines like steroids. Check alongside creatinine and eGFR to understand the cause.
Low: Can occur with liver conditions, low protein intake, overhydration, or pregnancy. Hydrate normally, review diet and medicines, and consider follow-up tests such as creatinine, eGFR, and urine albumin.
Common factors that can shift results include dehydration or overhydration; recent very high-protein meals or protein supplements; vigorous exercise; bleeding in the gut; severe infection or burns; and medicines such as steroids, tetracyclines, and diuretics. Time of day matters little, but being acutely ill can alter values.
Special situations (when to confirm or adjust): advanced liver disease, late pregnancy, dialysis, or major bleeding may require context-specific interpretation.
What does a urea result mean in plain terms? Higher levels often reflect dehydration, high protein intake, or reduced kidney filtering. Lower levels can occur with liver conditions or low protein intake.
Do I need to fast for this test? No fasting is needed. Follow your usual eating and drinking unless your clinician advises otherwise.
What can affect my result? Heavy exercise, high-protein meals, dehydration, overhydration, and medicines like steroids or diuretics can change levels. Tell your clinician about all drugs and supplements.
How often should I check urea? It depends on your health and risk. People with kidney concerns may test periodically; your clinician will guide timing.
How long do results take? Most labs return results within 1–2 business days.
What should I discuss with my clinician? Share your diet, fluid intake, and medications. Ask whether to review creatinine, eGFR, and urine tests for full context.
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