Bromocresol Purple Protein Electrophoresis (Serum/Plasma)
This test measures protein distribution in your blood using a technique called electrophoresis with the Bromocresol Purple dye. It helps assess the balance of different protein fractions, which can indicate potential abnormalities in your immune system, liver function, or other conditions.
["This test helps identify protein imbalances that may signal underlying health concerns."]
Key facts at a glance
- LOINC
- 26466-3
- Short code
- WBC # Fld
- Synonyms
- WBC # Fld
- 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
Electrophoresis separates blood proteins based on their size and electrical charge. The Bromocresol Purple dye binds to specific protein groups, allowing for visual differentiation of albumin, alpha, beta, and gamma globulins. This helps evaluate the overall protein profile in your serum or plasma.
How the Test Works
A small blood sample is drawn and placed in a gel medium. An electric current is applied, causing proteins to migrate toward the positive electrode. The dye highlights different protein bands, which are then analyzed for concentration and distribution.
Why It’s Done
This test is often used to diagnose or monitor conditions like chronic inflammation, autoimmune diseases, liver or kidney disorders, or certain types of anemia. It may also be part of a broader evaluation for unexplained symptoms or suspected protein abnormalities.
Common Uses and Conditions
Protein electrophoresis with Bromocresol Purple is particularly useful for detecting abnormal protein patterns, such as those seen in multiple myeloma, Waldenström macroglobulinemia, or other monoclonal gammopathies. It can also help assess albumin levels and globulin fractions in conditions affecting protein synthesis or breakdown.
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.
◆Associated findings1
Short name
BCP Protein Electrophoresis
Frequently asked questions
What might cause this test to be ordered?
How long will it take to get results?
Can I eat or drink 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