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Serum or Plasma Protein Electrophoresis by Bromocresol Green (BCG) Method

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

This test measures the distribution of different protein fractions in your blood, often used to check for conditions affecting protein balance.

Quick summary

["Helps identify abnormal protein patterns that may signal underlying health issues."]

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

Key facts at a glance

LOINC
25295-7
Short code
S pneum Da 6B IgG Ser-aCnc
Synonyms
S pneum Da 6B IgG Ser-aCnc
Category
coagulation
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
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 Proteins Does This Test Measure?

Protein electrophoresis separates blood proteins into distinct bands based on size and charge. Key components include albumin, alpha-globulins, beta-globulins, and gamma-globulins. Abnormal patterns may indicate conditions like multiple myeloma, liver disease, or chronic inflammation.

Why Might You Need This Test?

Your healthcare provider may order this test if you have symptoms like unexplained weight loss, fatigue, swelling, or if they suspect conditions like protein-losing disorders, infections, or certain cancers.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in the arm. The blood is then processed to separate serum or plasma for testing. This test does not require fasting.

Common Conditions Monitored

This test helps diagnose or monitor conditions such as multiple myeloma, Waldenström macroglobulinemia, liver disease, kidney disease, and certain autoimmune disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BCG Protein Electrophoresis

Frequently asked questions

What does a normal result mean?
A normal result typically shows a balanced distribution of proteins across the different bands. However, individual results can vary based on age, health status, and other factors.
Can I eat or drink before this test?
No special preparation is needed, including no restrictions on food or drink before the test.
How long will it take to get my results?
Results are usually available within 24 to 48 hours, depending on your lab’s processing schedule.
  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