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Interleukin-3 receptor alpha (IL-3RA) mass concentration in serum/plasma

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

This test measures the amount of a protein called interleukin-3 receptor alpha (IL-3RA) in your blood. It may be used to help diagnose or monitor certain immune system conditions.

Quick summary

["IL-3RA levels can help assess immune function in specific disorders."]

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

Key facts at a glance

LOINC
70081-5
Short code
Il3 Fld-mCnc
Synonyms
Il3 Fld-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

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms or conditions linked to abnormal immune responses, such as certain autoimmune diseases or blood disorders. It could also be part of a broader evaluation for suspected inflammatory conditions or after treatment for immune-related illnesses.

What to Expect Before the Test

No special preparation is typically needed. You may be asked to fast or avoid certain medications for a short time, depending on your provider’s instructions. Bring a list of medications and supplements you’re currently taking.

How the Test Is Performed

A blood sample is drawn from a vein in your arm, usually in a clinic or lab setting. The blood is processed to separate serum or plasma, where the IL-3RA protein is measured using a specialized laboratory technique.

What the Results Mean

Results are interpreted by your healthcare provider based on your medical history, symptoms, and other test results. Elevated or low levels may indicate specific conditions, but they are not standalone diagnoses. Follow-up may include additional tests or discussions with your provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IL-3 receptor alpha level

Frequently asked questions

What does an abnormal IL-3RA level indicate?
An abnormal result may signal an immune system imbalance, potentially linked to conditions like certain autoimmune diseases or chronic inflammation. However, results alone do not diagnose a condition; they are part of a larger clinical picture reviewed by your healthcare provider.
How often should I get this test?
Frequency depends on your medical needs. Your provider will determine how often to repeat this test based on your symptoms, treatment plan, or ongoing health monitoring.
Can diet or medications affect IL-3RA levels?
While diet and medications may influence immune-related proteins, IL-3RA levels are typically measured in a controlled lab setting where external factors are minimized. Always discuss any potential interactions with your provider before starting new medications or supplements.
  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