Skip to content

Immunoglobulin Light Chain Profile (Serum)

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

This test measures the levels of light chains (small protein fragments) found in your immune system’s antibodies. It helps identify conditions like multiple myeloma or other light chain diseases.

Quick summary

["Light chain tests help diagnose immune system disorders by checking for abnormal protein fragments in your blood."]

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

Key facts at a glance

LOINC
43110-6
Short code
Immunoglobulin LC Pnl 24h Ur
Synonyms
Immunoglobulin LC Pnl 24h Ur
Category
chemistry
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

Why This Test Might Be Ordered

Your doctor may recommend this test if you have symptoms like unexplained fatigue, frequent infections, kidney problems, or unexplained bone pain. It’s also used to monitor certain cancers or immune disorders, such as multiple myeloma or light chain amyloidosis.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from your arm. The test is quick and typically done in a lab setting.

What the Results Mean

Results show the concentration of different light chains (kappa and lambda) in your blood. Abnormal levels may indicate an overproduction of these proteins, which can affect organs like the kidneys.

Common Conditions Monitored

This test helps diagnose or monitor conditions like multiple myeloma (a cancer of plasma cells), light chain amyloidosis (a buildup of light chains in organs), or other rare immune disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal light chain levels can signal serious conditions that require medical attention. For example, high levels of kappa or lambda chains may suggest multiple myeloma or light chain deposition disease, which can damage organs like the kidneys. Early detection improves treatment options and outcomes.

Short name

Ig Light Chain Test

Frequently asked questions

What causes abnormal light chain levels?
Abnormal light chain levels are often linked to conditions like multiple myeloma, where plasma cells produce too many light chains. Other causes may include certain infections, autoimmune diseases, or rare genetic disorders.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on your lab’s processing time.
Can lifestyle changes affect light chain test results?
Light chain levels are primarily influenced by underlying medical conditions. While diet or exercise may support overall health, they don’t directly alter test results unless they impact conditions like kidney function.
  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