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Serum or Plasma Protein Electrophoresis with Bromocresol Green Staining

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

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 suggest conditions like multiple myeloma, chronic liver disease, or other disorders.

Quick summary

["This test helps doctors check for unusual protein levels that could signal health concerns."]

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

Key facts at a glance

LOINC
77095-8
Short code
MRPS2 Fam Mut Anl Bld/T
Synonyms
MRPS2 Fam Mut Anl Bld/T
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
molgen
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

Electrophoresis separates proteins in your blood based on size and charge. Bromocresol green binds to albumin and globulins, allowing for visual differentiation of protein fractions. This helps detect shifts in protein composition that may indicate underlying health issues.

Why It’s Done

Doctors may order this test if you have symptoms like unexplained weight loss, fatigue, or swelling, or if they suspect conditions like multiple myeloma, liver disease, or kidney problems. It’s also used in screening and monitoring certain diseases.

Common Conditions Monitored

Abnormal protein patterns can signal conditions such as multiple myeloma (a cancer of plasma cells), chronic liver disease, or inflammatory disorders. The test helps track treatment progress or detect new issues over time.

Sample Collection and Preparation

A blood sample is drawn from a vein, usually in your arm. The blood is then processed to separate serum or plasma for testing. No special preparation is needed, but fasting may be advised depending on your doctor’s instructions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BCG Protein Electrophoresis

Frequently asked questions

How long does it take to get results from this test?
Results are typically available within 24 to 48 hours, depending on lab processing times. Your doctor will discuss the findings with you during your follow-up visit.
Can I eat or drink before this test?
No specific diet is required, but always follow your doctor’s instructions. Avoid alcohol or certain medications if advised, as they may affect results.
What are the most common reasons for ordering this test?
Common reasons include diagnosing or monitoring conditions like multiple myeloma, liver disease, or kidney disorders, as well as evaluating symptoms like unexplained weight loss, fatigue, or swelling.
  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