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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 that may indicate conditions like liver disease or other metabolic disorders.

Quick summary

["This test helps doctors evaluate protein balance in your blood for potential health concerns."]

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

Key facts at a glance

LOINC
65776-7
Short code
Silver birch (nBet v) 1 IgE Qn
Synonyms
Silver birch (nBet v) 1 IgE Qn
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 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 diagnose or monitor conditions affecting protein metabolism, such as liver disease, kidney problems, or certain genetic disorders. It can also be used in research or specialized clinical settings.

Sample Collection

A blood sample is drawn from a vein, usually in your arm. The serum portion (liquid part after clotting) is used for analysis. This is a common procedure with minimal discomfort.

Preparation

No special preparation is needed, but you may be asked to fast for 8–12 hours before the test if instructed by your healthcare provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test provides insights into protein distribution in the bloodstream. Abnormal patterns may indicate conditions like hypoalbuminemia (low albumin), dysproteinemias (abnormal protein synthesis), or systemic diseases affecting protein metabolism. It is less commonly used than other protein tests but remains valuable in specific diagnostic contexts.

Short name

BCG Protein Electrophoresis

Frequently asked questions

Will I feel any discomfort during the blood draw?
You might feel a slight pinch or sting when the needle is inserted, but most people describe it as mild discomfort. Afterward, there may be a small bruise or soreness at the site, which usually goes away quickly.
How long will it take to get my results?
Results are typically available within 1–3 business days, depending on lab processing times. Your doctor will discuss them with you during your follow-up visit.
Can I eat or drink before this test?
Follow your doctor’s instructions, but generally, you can eat a normal meal unless fasting is required for another reason (e.g., certain blood tests). Always confirm with your healthcare provider.
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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