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Serum/plasma CXCL13 concentration (mass concentration)

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

This test measures the amount of CXCL13, a protein involved in immune system responses, found in your blood.

Quick summary

["CXCL13 helps identify immune-related conditions and inflammation."]

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

Key facts at a glance

LOINC
106796-6
Short code
CXCL13 Ag Ser-mCnc
Synonyms
CXCL13 Ag Ser-mCnc
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

What Is CXCL13 Used For?

CXCL13 is primarily studied in research and clinical contexts related to immune system function, particularly in conditions like certain autoimmune diseases or chronic inflammatory states. It may be used to assess immune responses or monitor specific health conditions where immune activity is suspected.

How Is This Test Performed?

A blood sample is drawn from a vein, typically in your arm. The sample is then processed to separate serum or plasma, which is analyzed using a specialized immunoassay technique to measure CXCL13 levels.

Why Might You Need This Test?

Your healthcare provider may order this test if they suspect an immune-related disorder, such as certain types of arthritis, chronic infections, or other inflammatory conditions. It may also be part of research studies or specialized diagnostic protocols.

What Does a Result Mean?

Results are interpreted based on clinical context and individual health. Elevated levels may suggest heightened immune activity, while lower levels could indicate reduced immune signaling. Your doctor will discuss findings in relation to your symptoms and medical history.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CXCL13 Level

Frequently asked questions

What could cause abnormal results?
Abnormal CXCL13 levels may be linked to chronic inflammation, autoimmune diseases, or certain infections. However, results alone do not diagnose conditions; they are used alongside other tests and clinical findings.
How soon will I get results?
Results are typically available within 24 to 72 hours, depending on lab processing times. Your healthcare provider will contact you once results are ready.
Is fasting required for this test?
No fasting is required for this blood test. However, follow any specific instructions your doctor provides for optimal test accuracy.
  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