Bromocresol Green Protein Electrophoresis (BCG Protein Electrophoresis)
This test measures protein levels in your blood using a technique called bromocresol green electrophoresis. It helps identify patterns of protein distribution that may indicate conditions affecting protein synthesis, transport, or breakdown.
["This test assesses protein profiles to detect potential abnormalities in blood protein composition."]
Key facts at a glance
- LOINC
- 49917-8
- Short code
- LPT 10 umol Be 6D WBC-Rto
- Synonyms
- LPT 10 umol Be 6D WBC-Rto
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 4.5
- Ref high
- 11
- Critical range
- 2 N/A – 30 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 85004
- SNOMED
- 900000000000003002
- 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
Bromocresol Green Protein Electrophoresis separates proteins in your blood based on size and charge. Different protein fractions (such as albumin, globulins, and other proteins) move at varying speeds through an electric field. The test uses bromocresol green dye to detect these fractions, providing a visual profile of protein distribution.
Why It’s Done
This test may be used to diagnose or monitor conditions like liver disease, kidney disease, certain types of cancer, or inherited protein disorders. It can also help evaluate protein abnormalities in people with unexplained symptoms such as fatigue, swelling, or changes in blood chemistry.
Sample Collection and Preparation
A blood sample is drawn from a vein, typically in your arm. The blood is then processed to separate the serum or plasma, which is analyzed using electrophoresis. The test does not require fasting unless specified by your healthcare provider.
Interpretation and Results
Results are presented as a graphical profile showing the distribution of different protein fractions. Abnormal patterns may suggest conditions like hypoalbuminemia, dysproteinemias (such as multiple myeloma or monoclonal gammopathy), or other systemic diseases. Your healthcare provider will interpret the results in the context of your medical history and symptoms.
Reference range
Adult: 4.5-11.0 x 10^9/LN/A
No special preparation required. Stay well hydrated.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
BCG Protein Electrophoresis
Frequently asked questions
How long does it take to get my results from this test?
What do abnormal protein patterns mean?
Can I eat or drink anything before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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