Albumin in Urine
UrinanalyseZuletzt geprüft: 7. April 2026. Quellenansatz: Standardkontext zur Laborinterpretation, allgemeine medizinische Referenzmaterialien sowie öffentliche Gesundheits- oder klinische Leitlinien, sofern relevant.
Was ist Albumin in Urine?
Albumin is the most abundant protein in the blood, produced by the liver and responsible for maintaining fluid balance and transporting hormones, vitamins, and medications throughout the body. Healthy kidneys filter waste from the blood while keeping essential proteins like albumin in circulation. When small amounts of albumin begin leaking into the urine—a condition known as microalbuminuria—it is one of the earliest detectable signs that the kidney's filtering units (glomeruli) are damaged.
A urine albumin test measures the amount of albumin present in a urine sample, typically expressed as milligrams per liter or as an albumin-to-creatinine ratio (ACR) to account for urine concentration. This test is a cornerstone of preventive screening in people with diabetes, hypertension, and other conditions that place the kidneys at risk. Detecting albumin in urine early allows for interventions that can slow or prevent the progression to chronic kidney disease and kidney failure.
Warum der Wert wichtig ist
Albumin in urine is one of the earliest warning signs of kidney damage, often appearing years before kidney function measurably declines. In people with diabetes, persistent microalbuminuria significantly increases the risk of progressing to diabetic nephropathy and end-stage renal disease. Albuminuria is also an independent risk factor for cardiovascular disease, stroke, and heart failure. Early detection and treatment—typically through blood pressure control, blood sugar management, and medications like ACE inhibitors—can dramatically slow kidney damage progression.
Normale Referenzbereiche
| Gruppe | Bereich | Einheit |
|---|---|---|
| Normal | <30 | mg/g creatinine (ACR) |
| Microalbuminuria | 30–300 | mg/g creatinine (ACR) |
| Macroalbuminuria | >300 | mg/g creatinine (ACR) |
Referenzbereiche können je nach Labor variieren. Vergleichen Sie Ihre Ergebnisse immer mit den Bereichen Ihres Testlabors.
Was hohe uAlb-Werte bedeuten
Häufige Ursachen
- Diabetic nephropathy
- Hypertension-related kidney damage
- Glomerulonephritis
- Lupus nephritis
- Preeclampsia during pregnancy
- Heart failure
- Urinary tract infection (transient elevation)
Mögliche Symptome
- Foamy or frothy urine
- Swelling in the hands, feet, or face (edema)
- Fatigue
- Decreased urine output
- High blood pressure
- Often asymptomatic in early stages
Was zu tun ist: If albumin is detected in your urine, your doctor will typically repeat the test to confirm the result, as transient factors like intense exercise, fever, or urinary infection can temporarily elevate levels. Persistent albuminuria warrants blood pressure optimization, blood sugar control in diabetics, and possible initiation of ACE inhibitors or ARBs to protect kidney function. Regular monitoring every 3–6 months is recommended.
Was niedrige uAlb-Werte bedeuten
Häufige Ursachen
- Normal finding—healthy kidneys should produce very little urinary albumin
- Well-controlled diabetes and blood pressure
- Effective treatment with kidney-protective medications
Mögliche Symptome
- No symptoms—low or undetectable urine albumin is the expected healthy result
Was zu tun ist: Low or absent urine albumin is a normal and healthy result. Continue regular screening if you have risk factors such as diabetes or hypertension. Maintain a healthy lifestyle with controlled blood pressure and blood sugar to keep kidneys functioning optimally.
Wann wird ein uAlb-Test empfohlen?
- Annually if you have type 1 or type 2 diabetes
- Annually if you have high blood pressure
- When there is a family history of kidney disease
- If you notice foamy urine or unexplained swelling
- During pregnancy to screen for preeclampsia
- To monitor known chronic kidney disease progression
Häufig gestellte Fragen
Verwandte Biomarker
Weiterführende Inhalte
Erkrankungen
Quellen- und Prüfungsansatz
Biomarker-Glossarseiten sind erklärende Bildungsinhalte und sollten immer zusammen mit den Referenzbereichen und Kommentaren Ihres Labors sowie Ihrer Ärztin oder Ihres Arztes interpretiert werden. Mehr zu unseren redaktionellen Standards und unserem Prüfprozess finden Sie in unserer Redaktionsrichtlinie und Prüfprozess für Inhalte.
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Laborwerte hochladen →Medizinischer Hinweis: Diese Informationen dienen nur Bildungszwecken und ersetzen keine professionelle medizinische Beratung, Diagnose oder Behandlung. Referenzbereiche können zwischen Laboren variieren. Besprechen Sie die Interpretation Ihrer konkreten Testergebnisse immer mit Ihrer medizinischen Fachperson.