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Bromocresol Green Protein Electrophoresis (Serum)

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

This test measures protein distribution in your blood using electrophoresis with bromocresol green dye to assess albumin and globulin levels.

Quick summary

["Helps identify protein abnormalities that may signal conditions like liver disease or immune disorders."]

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

Key facts at a glance

LOINC
30794-2
Short code
MR Brst
Synonyms
MR Brst
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
mr
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 Is This Test Measuring?

Electrophoresis separates blood proteins based on size and charge, revealing patterns of albumin (the main protein in blood) and globulins (proteins involved in immunity and transport). Bromocresol green dye binds to albumin, helping distinguish its concentration from other proteins.

Why Might You Need This Test?

Doctors may order this test to diagnose or monitor conditions like chronic liver disease, kidney disease, or certain autoimmune disorders, where protein balance in blood can shift.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in the arm. The serum (liquid part after blood clotting) is then analyzed to separate proteins for comparison against expected patterns.

Common Conditions Monitored

Abnormal results may indicate liver dysfunction (reduced albumin), immune system issues (elevated globulins), or conditions affecting protein synthesis or breakdown.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BCG Protein Electrophoresis

Frequently asked questions

How long does it take to get results?
Results are usually available within 1–3 business days, depending on lab processing times. Follow-up with your healthcare provider for interpretation.
What does a ‘normal’ result mean?
A ‘normal’ result doesn’t mean you’re healthy—it means your protein distribution aligns with general population averages. Abnormal patterns may require further testing or medical evaluation.
Can I eat or drink before this test?
No special diet is needed, but avoid alcohol for 24 hours before testing, as it may affect protein levels.
  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