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Protein Electrophoresis (Serum/Plasma) with Bromocresol Purple (BCP) Dye Shift Analysis

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

This test measures the distribution of different protein fractions in your blood, often used to identify abnormalities in protein composition.

Quick summary

["Helps diagnose conditions affecting protein balance in your bloodstream."]

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

Key facts at a glance

LOINC
72495-5
Short code
C parap DNA Vag Ql NAA+probe
Synonyms
C parap DNA Vag Ql 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 Proteins Are Measured?

Electrophoresis separates blood proteins based on size and charge, revealing distinct bands corresponding to albumin, globulins (including immunoglobulins), and other proteins. The BCP dye helps visualize shifts in protein concentration across these fractions.

Why Is This Test Done?

It’s commonly used to screen for conditions like multiple myeloma (cancer of plasma cells), systemic lupus erythematosus, or other autoimmune diseases where abnormal protein patterns may appear.

Sample Collection and Preparation

A blood sample is drawn, typically from a vein in your arm. The serum or plasma is then processed and mixed with BCP dye before analysis in an electrophoresis chamber.

How Results Are Interpreted

Results show the relative amounts of proteins in each band. Abnormal patterns (e.g., spikes, smears, or shifts) may indicate underlying health issues requiring further testing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Protein Electrophoresis

Frequently asked questions

What does a protein electrophoresis test measure?
It measures the distribution of various proteins in your blood, including albumin, globulins, and other fractions, often to detect abnormalities like protein disorders or autoimmune conditions.
How long does it take to get results from this test?
Results are typically available within 1–3 business days, depending on lab processing times.
Can I eat or drink before this test?
No special preparation is needed, but avoid alcohol for 24 hours before your blood draw to ensure accurate results.
  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