Serum or Plasma Protein Electrophoresis by Bromocresol Green
This test measures the distribution of proteins in your blood using electrophoresis and a dye called bromocresol green. It helps identify abnormal protein patterns, which may indicate conditions like multiple myeloma, liver disease, or other disorders.
["This test helps doctors spot unusual protein levels that could signal serious health issues."]
Key facts at a glance
- LOINC
- 12712-6
- Short code
- Hgb S+D+G Reg Bld Ql Elph Alk
- Synonyms
- Hgb S+D+G Reg Bld Ql Elph Alk
- Category
- hematology
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Ref low
- 3.5
- Ref high
- 5
- Critical range
- 7 N/A – 20 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- electrophoresis-ph
- CPT
- 84132
- SNOMED
- 110742001
- Specimen volume
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
Protein electrophoresis separates blood proteins into different fractions (e.g., albumin, globulins) based on size and charge. Bromocresol green binds to proteins, allowing visual differentiation of these fractions. This helps detect shifts in protein composition that may reflect underlying diseases.
Common Uses and Indications
Doctors may order this test to diagnose or monitor conditions such as multiple myeloma, chronic liver disease, or certain autoimmune disorders. It’s also used in screening for protein abnormalities in kidney disease or after chemotherapy.
How the Test Works
A small blood sample is drawn, and proteins are separated using an electric field. The dye binds to specific protein types, creating distinct bands. These bands are analyzed to compare protein levels to what’s expected in healthy blood.
Preparation and Sample Collection
No special preparation is needed, but fasting may be advised depending on the lab’s protocol. A simple blood draw is performed, and the sample is sent to the lab for processing.
Reference range
Adult: 3.5-5.0 mmol/LN/A
No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
BCG Protein Electrophoresis
Frequently asked questions
Why might my doctor order this test?
What do abnormal results mean?
How long does it take to get results?
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