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Bromocresol Green Protein Electrophoresis (BCG Protein Electrophoresis)

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

This test measures protein distribution in serum using bromocresol green dye to separate and analyze proteins by size and charge.

Quick summary

["It helps assess protein patterns, often used to evaluate conditions affecting protein synthesis or distribution."]

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

Key facts at a glance

LOINC
36607-0
Short code
XR Abd Obl
Synonyms
XR Abd Obl
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
xr
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 This Test Measures

Bromocresol green dye binds to proteins of different sizes, allowing separation via electrophoresis. This method helps distinguish between albumin and globulin fractions, which can indicate underlying health issues like protein disorders or liver/kidney conditions.

How It’s Performed

A blood sample is drawn, and the serum is analyzed in a lab using an electric field to separate proteins. The dye’s color change reflects protein concentration in each fraction.

When It’s Ordered

Doctors may request this test if symptoms like swelling, unexplained weight loss, or liver/kidney problems suggest protein abnormalities. It’s less common than general protein tests but useful for specific evaluations.

Common Uses

This test is primarily used to diagnose conditions like hypoalbuminemia (low albumin), dysproteinemias (abnormal protein levels), or to monitor protein disorders in chronic diseases.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BCG Protein Electrophoresis

Frequently asked questions

Why might my doctor order this test?
If they suspect a protein-related issue, such as liver/kidney problems, chronic disease, or an inherited protein disorder. It’s less frequently used than simpler protein tests but offers precise insights.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Follow-up with your doctor will help interpret the findings.
What does a normal result mean?
A normal result shows balanced protein fractions, indicating healthy protein distribution. Abnormal patterns may require further testing or medical evaluation.
  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