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Serum or plasma concentration of albumin by bromocresol green (BCG) dye-binding method

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of albumin, a key protein in your blood, using a dye-binding technique. Albumin helps maintain fluid balance and supports the immune system.

Quick summary

["Albumin levels help assess protein status and kidney function."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
54030-2
Short code
ENA SM-B Ab Ser Ql
Synonyms
ENA SM-B Ab Ser Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why Albumin Levels Matter

Albumin is one of the most abundant proteins in your blood. It plays a critical role in keeping fluids where they need to be, helping tissues receive proper nutrition and oxygen. Low albumin can signal problems like malnutrition, liver disease, or kidney issues.

What Can Affect Albumin Levels?

Several conditions or treatments can influence albumin levels, including chronic kidney disease, liver cirrhosis, severe infections, or malnutrition. Certain medications and pregnancy may also impact results.

Common Reasons for Testing

Your doctor may order this test to check for protein-losing conditions, monitor kidney or liver health, or evaluate overall nutritional status. It’s also sometimes used in screening for conditions like nephrotic syndrome or severe burns.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the test if it’s part of a larger blood panel. Wear comfortable clothing for the blood draw, and let your doctor know about any medications or health conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Albumin (BCG)

Frequently asked questions

How low or high albumin levels might be interpreted depends on your overall health and medical history. Very low levels often indicate serious underlying issues, while levels that are too high may suggest dehydration or inflammation. Always discuss results with your healthcare provider.
This test is typically done on a blood sample drawn from a vein. The sample is sent to a lab where the albumin is measured using a dye-binding method called bromocresol green. Results are usually available within 1–3 days.
What if my albumin level is low?
A low albumin level may signal conditions like kidney disease, liver problems, or poor nutrition. Your doctor will review your results with you and may recommend further tests or treatments, such as dietary changes or medications, to address the underlying cause.
Can diet affect albumin test results?
Yes, diet can influence albumin levels. Eating enough protein-rich foods (like lean meats, eggs, and legumes) is important for maintaining healthy albumin. Avoiding excessive alcohol or eating poorly may lower albumin levels over time.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy