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Major Protein Electrophoresis (Serum)

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

This test measures the distribution of different proteins in your blood, including albumin, globulins, and other fractions. It helps identify abnormalities in protein levels that may suggest conditions like infections, inflammation, or certain cancers.

Quick summary

["Electrophoresis helps diagnose and monitor protein-related health issues by separating blood proteins for closer examination."]

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

Key facts at a glance

LOINC
53799-3
Short code
Maj XM SerPl Electronic-Imp
Synonyms
Maj XM SerPl Electronic-Imp
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
electronic
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

Why This Test Is Done

Your healthcare provider may order this test to investigate symptoms such as unexplained weight loss, fatigue, swelling, or changes in kidney function. It’s also used to monitor conditions like multiple myeloma, lymphoma, or chronic liver disease.

What to Expect Before the Test

No special preparation is usually needed. You may be asked to fast for 8–12 hours before the test if your lab requires it, but this isn’t always required for protein electrophoresis. Bring any medications you’re taking.

During the Test

A small blood sample is drawn from a vein in your arm. The blood is placed in a gel and subjected to an electric current, which separates proteins based on size and charge. The results are analyzed to identify protein patterns.

What the Results Mean

Results show the relative amounts of different protein bands. Abnormal patterns may indicate conditions like multiple myeloma (excess monoclonal proteins), liver disease (altered albumin/globulin ratios), or immune system disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Serum Protein Electrophoresis

Frequently asked questions

What could cause abnormal protein electrophoresis results?
Abnormal results may signal conditions such as multiple myeloma, Waldenström macroglobulinemia, chronic liver disease, or severe infections. Your provider will discuss findings in relation to your symptoms and medical history.
How long will I need to wait for results?
Results are typically available within 1–3 business days, depending on lab processing times. Follow-up may be scheduled if further testing or evaluation is needed.
Can I eat or drink before this test?
Check with your provider first—some labs require fasting, but protein electrophoresis often does not. If unsure, ask your lab or healthcare team for clarification.
  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