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Serum or Plasma Protein Electrophoresis (Qualitative)

Published: August 9, 2026Updated: August 17, 2026

This test measures the distribution of different protein types in your blood, helping identify conditions like multiple myeloma, liver disease, or kidney problems.

Quick summary

["Protein electrophoresis helps detect abnormal protein patterns that may signal serious health concerns."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
8085-3
Short code
p-ANCA Ser-aCnc
Synonyms
p-ANCA Ser-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Critical range
0.5 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 Proteins Does This Test Measure?

Electrophoresis separates blood proteins into fractions based on size and charge. Key components include albumin (the most abundant protein), globulins (which include antibodies and other immune proteins), and alpha, beta, and gamma globulins. Abnormal patterns may indicate conditions like multiple myeloma, liver disease, or chronic inflammation.

Why Might You Need This Test?

Your doctor may order this test if you have symptoms like unexplained weight loss, fatigue, swollen lymph nodes, or signs of organ dysfunction. It’s also used to monitor conditions like multiple myeloma, autoimmune diseases, or kidney disease.

How Is the Test Performed?

A blood sample is drawn, and the serum or plasma is placed in an electric field. Proteins migrate toward the opposite charge, creating bands that represent different protein types. The results are interpreted by comparing the pattern to normal ranges.

What Do the Results Mean?

Normal results show a balanced distribution of proteins. Abnormal patterns (e.g., extra bands, uneven distribution) may signal conditions like monoclonal gammopathy (a precursor to multiple myeloma), liver disease, or immune disorders. Your doctor will discuss findings with you.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Detecting Underlying Conditions

Short name

Protein Electrophoresis (Serum/Plasma)

Frequently asked questions

How often will I need this test?
This test is typically ordered as a screening or monitoring tool, often once or twice a year for patients with known conditions like multiple myeloma or kidney disease. Your doctor will determine frequency based on your health needs.
What are the possible side effects of this test?
The most common side effect is a mild bruise or soreness at the needle insertion site. Rarely, there may be a reaction to the blood draw, such as dizziness or fainting. Most side effects are minor and resolve quickly.
Can I eat or drink before this test?
You can eat and drink normally before this test unless your doctor specifies otherwise. No special preparation is needed, but fasting may not be required for this type of test.
  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 17, 2026. · Read our editorial policy