Skip to content

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 protein patterns, often used to evaluate conditions affecting protein structure or quantity.

Quick summary

["This test helps diagnose or monitor protein disorders by analyzing how proteins separate in your blood."]

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

Key facts at a glance

LOINC
69169-1
Short code
MR Guided Brst-Bl Bx
Synonyms
MR Guided Brst-Bl Bx
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 This Test Measures

Electrophoresis separates proteins based on size and charge, creating distinct bands. Bromocresol green binds to specific protein fractions, helping identify abnormalities in protein composition, such as those seen in conditions like multiple myeloma or certain genetic disorders.

Why It’s Ordered

Your healthcare provider may order this test if you have symptoms like unexplained weight loss, fatigue, or signs of abnormal protein production. It’s also used to screen for conditions affecting protein metabolism or to monitor treatment progress in patients with known protein disorders.

Common Conditions Monitored

This test is particularly useful for detecting or monitoring conditions like multiple myeloma (a cancer of plasma cells), certain hereditary protein disorders, or conditions affecting albumin and globulin levels.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in the arm. The blood is processed to separate serum, which is then analyzed in a lab using electrophoresis with bromocresol green to visualize protein patterns.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

BCG Protein Electrophoresis

Frequently asked questions

What does an abnormal result mean?
Abnormal results may indicate imbalances in protein fractions, such as elevated or low levels of specific proteins. This could signal underlying conditions like protein disorders, infections, liver or kidney disease, or certain cancers. Always discuss results with your healthcare provider for personalized interpretation.
How often should I get this test?
Frequency depends on your medical condition and treatment plan. If you have a known protein disorder, your provider may schedule regular follow-ups. For screening or monitoring, they’ll determine the best timing based on your symptoms and health status.
Can I prepare for this test?
No special preparation is needed. Avoid alcohol or certain medications for 24 hours before the test if instructed by your provider, as they may affect protein levels or test accuracy.
  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