Serum Protein Electrophoresis by Bromocresol Purple (BCP) Method
This test measures the distribution of different protein fractions in your blood serum using an electrophoresis technique with bromocresol purple dye. It helps identify abnormalities in protein composition, which can indicate conditions like multiple myeloma, liver disease, or other metabolic disorders.
["This test helps doctors understand how proteins are balanced in your blood."]
Key facts at a glance
- LOINC
- 56767-7
- Short code
- M protein beta Ur Elph-mCnc
- Synonyms
- M protein beta Ur Elph-mCnc
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- electrophoresis
- Specimen volume
- 10 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your healthcare provider may order this test if they suspect conditions affecting protein levels, such as kidney disease, liver problems, or certain cancers. It can also be part of routine monitoring for chronic conditions like diabetes or autoimmune diseases. Symptoms like swelling, unexplained weight loss, or fatigue may prompt this test.
How the Test Works
A small blood sample is drawn and separated into different protein fractions based on their size and electrical charge. The bromocresol purple dye binds to specific proteins, allowing for visual separation on a gel. The results show bands representing various protein groups, including albumin, globulins, and others.
Sample Collection and Preparation
Blood is collected from a vein in your arm by a healthcare professional. The sample is then processed and sent to a lab for analysis. No special preparation is needed, but fasting may be advised depending on your provider’s instructions.
Interpreting Results
Results are typically presented as a graph or pattern showing the relative amounts of different protein types. Abnormal patterns may indicate high or low levels of specific proteins, which can guide further testing or treatment planning.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal protein electrophoresis can signal underlying health issues. For example, a spike in certain globulins might suggest multiple myeloma or other plasma cell disorders, while altered albumin levels could point to liver or kidney disease. Your provider will discuss the results in the context of your symptoms and medical history.
Short name
Serum Protein Electrophoresis
Frequently asked questions
What Does an Abnormal Result Mean?
How Often Should I Get This Test?
Can I Prepare for 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