Skip to content

Serum or Plasma Protein Electrophoresis (Qualitative) with Bromocresol Green/Blue Staining

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

This test measures the distribution of different protein types in your blood, often used to check for conditions like multiple myeloma, liver disease, or kidney problems.

Quick summary

["Helps identify unusual protein patterns that may signal hidden health concerns."]

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

Key facts at a glance

LOINC
85971-0
Short code
S pneum Da 12F Ab Ser-mCnc
Synonyms
S pneum Da 12F Ab Ser-mCnc
Category
coagulation
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

Electrophoresis separates blood proteins based on size and charge, revealing fractions like albumin, globulins, and other proteins. Bromocresol dyes (green/blue) highlight specific protein bands for qualitative analysis.

Why It’s Done

Your doctor may order this test to diagnose or monitor conditions affecting protein balance, such as infections, cancers, or metabolic disorders. It’s also used in screening for conditions like multiple myeloma or hereditary protein disorders.

Sample Collection and Preparation

A blood sample is drawn from a vein, usually in the arm. The serum or plasma is then processed and stained with bromocresol dyes to visualize protein bands under a microscope.

Interpretation Basics

Results are qualitative (not numerical), showing relative protein amounts in bands. Abnormal patterns may indicate excess or deficiency of specific proteins, which can guide further testing or treatment.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Protein Electrophoresis (Qualitative)

Frequently asked questions

Abnormal electrophoresis results may signal underlying issues like multiple myeloma (excess monoclonal proteins), liver disease (reduced albumin), or kidney problems (proteinuria). This test is critical for early detection in certain hereditary disorders.
This test does not provide exact quantities of proteins but highlights whether patterns are normal or concerning. Follow-up tests may be needed for further evaluation.
How long will I need to wait for results?
Results are typically available within 1–3 business days, depending on lab processing times. Your doctor will discuss findings during your follow-up visit.
Can I eat or drink anything before this test?
No special preparation is needed. However, inform your doctor about any medications or supplements you’re taking, as they may affect 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