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Protein Electrophoresis (Serum/Plasma) with Bromocresol Green (BCG) Dye Binding

Published: August 9, 2026Updated: August 16, 2026

This test measures protein distribution in your blood using electrophoresis and a dye that binds to specific protein fractions, helping identify abnormalities in protein levels.

Quick summary

["Assesses protein balance and potential conditions like liver disease or kidney problems."]

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

Key facts at a glance

LOINC
101300-2
Short code
S pyo DNA Throat Ql NAA+n-prb
Synonyms
S pyo DNA Throat Ql NAA+n-prb
Category
coagulation
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
non-probe-amp-tar
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

Your blood sample is separated into different protein fractions using an electric field. Bromocresol Green dye binds to albumin and globulin proteins, allowing for visual and quantitative analysis of these fractions.

Common Uses

This test is often used to diagnose or monitor conditions affecting protein synthesis, such as liver disease (e.g., cirrhosis), kidney disease, or certain autoimmune disorders.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in your arm. The sample is then processed in a lab to separate proteins and analyze them with the BCG dye method.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to avoid certain medications or foods that could interfere with results. Hydration and fasting may not be required unless specified by your healthcare provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

BCG Protein Electrophoresis

Frequently asked questions

Protein electrophoresis helps identify imbalances in protein fractions, which can indicate underlying health issues. For example, low albumin levels may suggest liver or kidney disease, while abnormal globulin patterns could point to autoimmune diseases or infections.
This test is not typically used for routine screening but is crucial in diagnosing and managing conditions affecting protein metabolism.
How long will results take?
Results are usually available within 1 to 3 business days, depending on lab processing times. Your healthcare provider will discuss the findings with you.
Can I eat or drink before this test?
No specific dietary restrictions apply, but always follow any instructions your healthcare provider gives you. Hydration is generally encouraged unless contraindicated.
  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