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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 a technique called electrophoresis with bromocresol green dye. It helps assess protein patterns, which can indicate conditions affecting protein synthesis, breakdown, or transport in the body.

Quick summary

["This test helps doctors evaluate protein balance in your blood, often used to diagnose or monitor conditions like liver disease or kidney problems."]

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

Key facts at a glance

LOINC
7673-7
Short code
Rye BasoBnd Ab Qn
Synonyms
Rye BasoBnd Ab Qn
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
lhr
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What This Test Measures

Electrophoresis separates proteins in your serum based on size and charge. Bromocresol green dye binds to specific protein fractions, allowing for visual or quantitative analysis of protein bands. This helps identify abnormal protein patterns that may signal underlying health issues.

Why It’s Done

Doctors may order this test to investigate symptoms like unexplained weight loss, fatigue, swelling, or changes in liver/kidney function. It can also be part of a broader evaluation for conditions like multiple myeloma, nephrotic syndrome, or certain autoimmune diseases.

Common Conditions Monitored

Abnormal results may show shifts in protein bands that could indicate conditions like liver disease (e.g., cirrhosis), kidney disease, or protein-losing disorders. It’s less commonly used than other protein tests but remains valuable in specific clinical scenarios.

Sample Preparation

A blood sample is drawn from a vein, typically in the arm. The serum (liquid part after clotting) is separated and sent to the lab for electrophoresis. No special preparation is needed, but fasting may be advised if your doctor specifies it for your test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BCG Protein Electrophoresis

Frequently asked questions

What does a high or low protein pattern mean?
High concentrations of certain protein bands might suggest overproduction (e.g., monoclonal gammopathy) or underproduction (e.g., malnutrition). Low albumin levels or altered globulin ratios could indicate liver dysfunction, inflammation, or immune disorders. Always discuss results with your healthcare provider.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Your doctor will explain what the findings mean in the context of your health.
Can I eat or drink before this test?
No special diet is required unless instructed by your doctor. However, if fasting is needed for another test, follow their guidance. Drink water as usual unless advised otherwise.
  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