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Bromocresol Green Protein Electrophoresis (Serum/Plasma)

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 the pattern of proteins, which can indicate conditions affecting protein synthesis, breakdown, or kidney function.

Quick summary

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

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

Key facts at a glance

LOINC
42289-9
Short code
Deprecated CT Kidney Bx needle guide
Synonyms
Deprecated CT Kidney Bx needle guide
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ct
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

How the Test Works

A small blood sample is drawn and placed in a gel. An electric current is applied, causing proteins to move through the gel based on their size and charge. Bromocresol green dye binds to specific protein fractions, creating visible bands that are analyzed to determine their relative amounts.

What the Results May Indicate

Abnormal patterns may suggest conditions like liver disease, kidney problems, or certain types of protein disorders. For example, shifts in albumin or globulin levels could point to inflammation, infection, or metabolic issues.

Common Uses and Conditions

This test is often used to diagnose or monitor conditions such as nephrotic syndrome, multiple myeloma, or other protein-related disorders. It may also be part of a broader evaluation for unexplained protein abnormalities in the blood.

Preparation for the Test

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. Wear comfortable clothing and plan to stay for the blood draw.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BCG Protein Electrophoresis

Frequently asked questions

Why might my doctor order this test?
Your doctor may order this test if they suspect conditions affecting protein balance, such as kidney disease, liver disorders, or certain cancers. It helps identify abnormal protein patterns that could signal underlying health issues requiring further investigation.
What are the typical reference ranges?
Reference ranges vary by lab and may not be standardized. Your results will be compared to your own baseline or clinical context rather than a fixed range. Ask your doctor for personalized interpretation.
How long will it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Follow up with your healthcare provider to discuss findings and next steps.
  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