ALBUMIN - SERUM

Albumin – Serum is a routine blood test that measures the concentration of albumin in serum. Albumin is the most abundant protein in blood plasma and is produced mainly by the liver.

Albumin helps maintain fluid within blood vessels and transports hormones, medicines, vitamins, fatty acids, calcium, and other substances throughout the body. Abnormal levels may provide information about liver function, kidney disease, nutritional status, inflammation, hydration, and other medical conditions.

Benefits of the Test

• Measures the concentration of albumin in serum.
• Supports assessment of the liver’s protein-producing function.
• Helps evaluate protein loss associated with kidney disease.
• Provides information about nutritional and protein status.
• Supports investigation of unexplained swelling or fluid accumulation.
• Can help evaluate chronic inflammatory or gastrointestinal conditions.
• Supports monitoring of known liver or kidney disease.
• May be included in liver-function or comprehensive metabolic panels.
• Helps monitor response to treatment in selected conditions.
• Requires only a routine blood sample.

Why Doctors Recommend This Test

Doctors may recommend this test for patients with jaundice, swelling of the legs or abdomen, unexplained weight loss, fatigue, reduced appetite, chronic liver disease, kidney disease, digestive disorders, burns, serious infection, or suspected malnutrition. It may also be included in routine liver-function and metabolic evaluations.

Preparation Before Test

• No fasting is generally required when serum albumin is ordered alone.
• Fasting may be necessary when the test is included with other blood investigations.
• Follow the specific instructions provided by your doctor or laboratory.
• Inform the healthcare provider about all medicines, vitamins, and supplements.
• Do not discontinue prescribed medication unless advised by your doctor.
• Inform your doctor about pregnancy, liver disease, kidney disease, or recent serious illness.
• Maintain normal hydration unless fluid restriction has been medically advised.
• Avoid unusually strenuous exercise before collection if instructed.
• Share previous liver, kidney, and protein test reports if available.
• A routine venous blood sample is collected for serum analysis.

Normal Reporting Time

The Serum Albumin test is generally processed as a routine biochemistry investigation. Results are commonly available within the same day or 1 working day, subject to sample suitability, analytical processing, validation, repeat testing requirements, and laboratory workflow.

Who Should Take This Test?

This test may be recommended for:

• Individuals with suspected liver disease.
• Patients with known or suspected kidney disease.
• People experiencing swelling of the legs, feet, face, or abdomen.
• Individuals with unexplained weight loss or reduced appetite.
• Patients with chronic diarrhoea or suspected malabsorption.
• People with burns, severe infection, or chronic inflammation.
• Patients undergoing nutritional assessment.
• Individuals with abnormal liver-function test results.
• Patients receiving monitoring for chronic liver or kidney conditions.
• People advised to undergo a liver-function or metabolic panel.

Detailed Information

Albumin is produced by the liver and released into the bloodstream. It contributes significantly to oncotic pressure, which helps keep fluid inside blood vessels and prevents excessive leakage into surrounding tissues.

Albumin also acts as a carrier protein. It binds and transports hormones, bilirubin, fatty acids, calcium, vitamins, and several medicines. Changes in albumin concentration may therefore influence the measured or biologically active levels of some substances.

A low serum albumin level is known as hypoalbuminemia. It may occur when the liver produces less albumin, the kidneys lose albumin into urine, the digestive system does not absorb enough nutrients, or the body experiences significant inflammation.

Possible causes of reduced albumin include chronic liver disease, cirrhosis, nephrotic syndrome, chronic kidney disease with protein loss, malnutrition, malabsorption, inflammatory conditions, severe infection, burns, and certain gastrointestinal disorders.

Low albumin may contribute to swelling of the feet and legs, facial puffiness, abdominal fluid accumulation, or fluid around the lungs. However, these symptoms can have several causes and require complete medical evaluation.

A high serum albumin result is less common and is usually associated with dehydration or reduced plasma water. Certain medicines and prolonged application of a tourniquet during blood collection may also influence the measured concentration.

Serum albumin alone cannot diagnose a specific liver, kidney, or nutritional disorder. Results are commonly interpreted with total protein, globulin, albumin-to-globulin ratio, bilirubin, liver enzymes, serum creatinine, eGFR, urine albumin, urine protein, and clinical findings.

Albumin has a relatively long half-life, so its concentration may not change immediately during an acute illness. Inflammation can reduce albumin independently of nutritional intake. Therefore, it should not be used as the sole marker of malnutrition.

Pregnancy and fluid administration can lower measured albumin through dilution. Dehydration may increase the concentration. The patient’s hydration and clinical condition should therefore be considered during interpretation.

The reference interval may vary according to age, laboratory method, instrument, and reporting units. Results should always be compared with the reference range printed on the individual laboratory report.

Additional investigations may include liver-function tests, total protein, globulin, kidney-function tests, urine albumin, urine protein, inflammatory markers, coagulation tests, ultrasound, or nutritional assessment.

At Focus Diagnostics, Serum Albumin testing is performed using established quantitative biochemistry methodologies, appropriate sample-handling procedures, analytical quality controls, and validation standards to provide reliable results.