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Comprehensive Serum/Plasma Protein Electrophoresis with Bromocresol Green Staining

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

This test measures the distribution of different protein types in your blood, helping identify abnormalities in protein patterns that may signal conditions like multiple myeloma, liver disease, or other disorders.

Quick summary

["This test helps diagnose and monitor protein-related health issues by analyzing blood protein fractions."]

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

Key facts at a glance

LOINC
99902-9
Short code
Tri-Phos Cry # UrnS Comp Assist
Synonyms
Tri-Phos Cry # UrnS Comp Assist
Category
electrolyte
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
computer-assisted
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 you have symptoms like unexplained weight loss, fatigue, frequent infections, or swelling. It’s also used to check for conditions affecting protein production, such as certain cancers or kidney/liver diseases.

How the Test Works

A small blood sample is drawn and separated into different protein fractions using gel electrophoresis. Bromocresol green dye binds to proteins, allowing for visual separation of albumin, globulins, and other components under a microscope.

Sample Collection

Blood is collected from a vein, usually in your arm, using a needle. You may feel a small pinch, but it’s typically over quickly. The sample is then processed and sent to the lab for analysis.

What to Expect Before the Test

No special preparation is needed, but inform your provider about any medications or conditions that could affect results, such as recent infections or certain medications.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Protein Electrophoresis (BCG)

Frequently asked questions

What Are Common Causes of Abnormal Results?
Abnormal results may be due to underlying health conditions, medications, or recent infections. Your provider will review your medical history and other test results to determine the cause.
How Long Does It Take to Get Results?
Results are typically available within 1–3 business days, depending on lab processing times. Your provider will discuss findings with you during a follow-up visit.
Can I Eat or Drink Before This Test?
No special diet is required, but avoid alcohol for 24 hours before testing if advised by your provider, as it may affect protein levels.
  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