Albumin: rango normal, alto y bajo

En resumenThe normal range is 3.4–5.4 g/dL (34–54 g/L). Low albumin points to liver disease, kidney disease, or poor nutrition; high values usually mean dehydration.

Valores de referencia

Grupo	Valor de referencia
Adultos	3.4–5.4 g/dL (34–54 g/L)

Normal value ranges vary slightly among laboratories, and some labs test different samples. Albumin is lower during pregnancy.

Compruebe su valor

Enter the number from your lab report — see how it compares with the typical range. Mind the units shown in the chosen row.

A rough comparison with a typical range, not a diagnosis. Reference ranges vary between laboratories — check the range on your own report and let a clinician interpret the result.

Qué es este marcador

Albumin is a protein made by the liver, and a serum albumin test measures its amount in the clear liquid portion of the blood. Albumin keeps fluid inside the blood vessels instead of letting it leak into the tissues, and it ferries many small molecules through the blood — among them bilirubin, calcium, progesterone, and some medicines.

The test helps determine whether the liver or the kidneys are diseased and whether the body is absorbing enough protein. An albumin result alone cannot diagnose a condition: providers read it together with the other liver and kidney tests, and albumin can also be measured in urine.

Several everyday situations shift the number. Albumin is lower during pregnancy, after 24–48 hours without eating, and with certain medicines such as birth control pills. It can read falsely high if the tourniquet stays on for a long time during the blood draw, and large volumes of intravenous fluid make the result inaccurate.

Blood is drawn from a vein. The provider may ask you to pause medicines that affect the test — anabolic steroids, androgens, growth hormone, and insulin can increase albumin levels — but none of them should be stopped without that conversation.

Cuando está elevado

DeshidrataciónThe classic cause of a high albumin: when the body loses fluid — for example through severe diarrhea — the protein is concentrated in a smaller blood volume.

High-protein dietA diet unusually rich in protein can raise the measured level.

Prolonged tourniquet during the drawA tourniquet left on for a long time concentrates the sample and can produce a falsely high result.

Cuando está bajo

Enfermedad hepáticaThe liver makes albumin, so severe cirrhosis, hepatitis, and steatotic liver disease lower it; fluid buildup in the abdomen (ascites) can follow.

Enfermedad renalDamaged kidneys let albumin escape into the urine, draining the blood level.

Malnutrition and malabsorptionLow-protein diets, Crohn disease, celiac disease, Whipple disease, and the period after weight-loss surgery all cut the supply or absorption of protein.

Infection, burns, thyroid diseaseWidespread burns, infections, and thyroid disease can also lower albumin.

Qué puede alterar el resultado

Estos factores pueden alterar el valor sin ninguna enfermedad — vale la pena considerarlos antes de repetir la prueba:

Pregnancy (lowers albumin)24–48 hours without eating (lowers)Birth control pills (lower); steroids, insulin, growth hormone (raise)Intravenous fluids and tourniquet time

Cómo prepararse

Tell your provider about all medicines you take. You may be asked to pause some of them — anabolic steroids, androgens, growth hormone, and insulin can raise albumin — but do not stop any medicine without talking to your provider first.

Cuándo tiene sentido repetir la prueba

An out-of-range value is read with the liver and kidney panels, and the test is repeated once influencing factors — hydration, nutrition, medicines — are accounted for.

Quién suele revisar este resultado

Un resultado fuera del rango de referencia suele ser revisado por:your GP or primary care doctor; a gastroenterologist or nephrologist depending on the suspected cause. Traiga su informe de laboratorio y cualquier resultado anterior a la cita.

Nombres usados en los informes de laboratorio

Su informe puede usar cualquiera de estos nombres:
AlbúminaALBSerum albumin test

Unidades y conversión

Medido en:g/dL

g/dL = g/L

g/dL × 10 = g/L. Example: 4.0 g/dL = 40 g/L. Results are rounded to 2 decimal places.

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See how MedProtect explains results in the app: the whole report, a check of the recognized values, and a clear breakdown.

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Preguntas frecuentes

Why does albumin matter for calcium?

Albumin carries calcium in the blood, so a low albumin can make total calcium look low even when the active, unbound calcium is normal. Providers read the two together.

Is low albumin always liver disease?

No. Kidney disease, malnutrition, malabsorption after weight-loss surgery, Crohn or celiac disease, infections, burns, thyroid disease, and pregnancy all lower albumin. The rest of the panel shows which direction to look.

Can a blood draw distort the result?

Yes. A tourniquet held for a long time can make albumin read falsely high, and large amounts of intravenous fluid make the result inaccurate. Mention both if they apply.

Fuentes

Albumin Blood Test: MedlinePlus Medical Test— MedlinePlus, Biblioteca Nacional de Medicina. Consultado: 29 de agosto de 2026.
Albumin blood (serum) test: MedlinePlus Medical Encyclopedia— MedlinePlus, Biblioteca Nacional de Medicina. Consultado: 29 de agosto de 2026.

Albúmina