Antibody Screening for Autoimmune Conditions (e.g., Rheumatoid Factor or Antinuclear Antibodies)
This test checks for antibodies your immune system may be producing that could indicate an autoimmune condition, such as inflammation or tissue damage.
["Autoimmune antibodies can signal potential health concerns that may need further evaluation."]
Key facts at a glance
- LOINC
- 35333-4
- Short code
- ENA Jo1 Ab Ser IA-aCnc
- Synonyms
- ENA Jo1 Ab Ser IA-aCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ia
- 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 Does This Test Measure?
This test detects the presence of certain proteins (antibodies) in your blood that your immune system mistakenly targets healthy tissues. These antibodies can be linked to conditions like lupus, rheumatoid arthritis, or other autoimmune diseases. The method used may involve immunoassay to identify these antibodies based on their reaction with specific antigens.
Why Might You Need This Test?
Your healthcare provider may recommend this test if you have symptoms like joint pain, fatigue, unexplained rashes, or other signs of an autoimmune condition. It can also be part of routine monitoring for certain chronic illnesses or after exposure to conditions that trigger autoimmune responses.
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 it involves drawing blood, but this depends on the specific test protocol. Bring your medical records or a list of medications if you have them.
What to Expect During the Test
A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch or discomfort, but it usually lasts only a few seconds. The process takes about 5 minutes, and you can resume normal activities afterward.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results may indicate an autoimmune condition, but they don’t always confirm a diagnosis. Follow-up tests, such as confirmatory antibody testing or additional bloodwork, may be needed to determine the exact cause. Some people test positive for antibodies without symptoms or disease, so further evaluation is critical to guide treatment.
Short name
Autoimmune Antibody Screen
Frequently asked questions
How long will I need to wait for results?
Can I eat or drink before this test?
What if my results are positive?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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