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Serum/Plasma Protein Electrophoresis with Bromocresol Green (BCG) Dye Binding

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

This test measures the distribution of different protein fractions in your blood using electrophoresis and a dye that binds to specific proteins, helping identify abnormalities in protein levels.

Quick summary

["Helps detect protein imbalances that may signal conditions like multiple myeloma, liver disease, or kidney problems."]

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

Key facts at a glance

LOINC
108088-6
Short code
RSV RNA Nph NAA+probe
Synonyms
RSV RNA Nph NAA+probe
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
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

The test separates blood proteins into bands (e.g., albumin, globulins) based on size and charge. Bromocresol Green binds to albumin, allowing for precise quantification of this protein and relative amounts of other protein groups.

Why It’s Done

Your doctor may order this test to diagnose or monitor conditions affecting protein synthesis, storage, or breakdown, such as chronic liver disease, kidney disease, or certain cancers.

Sample Collection and Preparation

A blood sample is drawn, and the serum or plasma is analyzed. The dye-binding method quantifies protein fractions without additional preparation beyond standard blood collection.

Common Conditions Monitored

Abnormal results may indicate conditions like hypoalbuminemia (low albumin), dysproteinemias (unusual protein patterns), or systemic diseases affecting protein metabolism.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BCG Protein Electrophoresis

Frequently asked questions

Why was this test ordered?
Your doctor may have suspected conditions like multiple myeloma, liver disease, or kidney dysfunction based on symptoms or other test results. This test helps confirm or guide treatment decisions by revealing protein imbalances.
What do my results mean?
Results show the proportion of albumin and globulins. If patterns differ from expected, further testing (e.g., bone marrow biopsy) may be needed to investigate underlying causes.
Can I prepare for this test?
No special preparation is needed. Avoid alcohol or certain medications 24 hours before if instructed by your doctor, as they 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