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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 an electrophoresis method with bromocresol green dye. It helps assess protein patterns, including albumin and globulin fractions, which can indicate conditions like liver disease or inflammation.

Quick summary

["This test helps doctors check how proteins are balanced in your blood."]

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

Key facts at a glance

LOINC
8094-5
Short code
ENA SS-B Ab Ser Ql
Synonyms
ENA SS-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

What This Test Measures

Electrophoresis separates proteins in your serum based on size and charge. Bromocresol green dye binds to specific protein groups, allowing for visual differentiation of albumin (the smaller, more abundant protein) and globulins (larger proteins like antibodies). This pattern can reflect underlying health issues.

Why It’s Done

Doctors may order this test to diagnose or monitor conditions like chronic liver disease, kidney disease, or certain autoimmune disorders. It can also help evaluate nutritional status or detect protein abnormalities.

How It Works

A small blood sample is drawn and mixed with the dye. An electric current is applied, causing proteins to migrate toward the anode. The resulting bands are analyzed to compare protein concentrations and patterns.

Sample Collection

Blood is collected from a vein, typically in the arm. The sample is processed immediately to separate serum (the liquid part after clotting) for testing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal protein patterns may signal liver dysfunction (reduced albumin), immune system issues (elevated globulins), or malnutrition. For example, low albumin could indicate poor liver function or protein loss from the kidneys.

Short name

BCG Protein Electrophoresis

Frequently asked questions

What does a bromocresol green electrophoresis test show?
It shows the relative amounts of different protein groups (albumin vs. globulins) in your blood. Changes in these levels can point to conditions like liver disease, kidney problems, or infections.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times.
Is there any preparation needed before the test?
No special preparation is needed, but avoid heavy meals 2 hours before your blood draw for consistency.
  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