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Serum Albumin by Bromocresol Green (BCG) Method

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

This test measures the amount of albumin, a protein found in your blood that helps maintain fluid balance and supports immune function.

Quick summary

["Albumin levels help assess kidney function and overall protein status in your blood."]

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

Key facts at a glance

LOINC
24202-4
Short code
SLEV Ab sp2 Titr Ser IF
Synonyms
SLEV Ab sp2 Titr Ser IF
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
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

What Albumin Does in Your Body

Albumin is a key protein in your blood that helps distribute fluids, carry nutrients, and support your immune system. Low levels may indicate problems like kidney disease or malnutrition, while high levels could be linked to dehydration or certain medical conditions.

Why This Test Might Be Ordered

Doctors may order this test to check for kidney function, monitor protein levels in chronic illnesses, or evaluate nutritional health. It’s also useful in diagnosing conditions like liver disease or severe infections.

Sample Preparation and Collection

A blood sample is drawn from a vein, usually in your arm. The serum (liquid part of blood after clotting) is then tested using the bromocresol green dye method to measure albumin concentration.

What to Expect Before the Test

No special preparation is needed, but inform your doctor about any medications or recent illnesses. Avoid strenuous activity 24 hours before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Albumin (BCG)

Frequently asked questions

Low albumin levels may signal kidney disease, liver problems, or malnutrition, while very high levels could suggest dehydration or certain inflammatory conditions. Always discuss results with your healthcare provider.
This test is typically performed on a blood sample drawn from your arm. The results help doctors diagnose and manage conditions affecting protein balance in your body.
How often should I get this test?
The frequency depends on your health condition. If you have chronic kidney disease, liver disease, or other ongoing health issues, your doctor may recommend regular testing. Otherwise, it’s often done as needed for specific concerns.
What do my albumin results mean?
Your doctor will interpret the results in the context of your overall health. Low levels may need further investigation into kidney or liver function, while normal or high levels usually indicate healthy protein balance. Never interpret results alone—always discuss them with your provider.
  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