Fluorescent Antibody Test for Antiphospholipid Antibodies (Screening)
This test measures certain antibodies in your blood that may be linked to blood clotting problems or other autoimmune conditions. It helps identify whether you have a condition called antiphospholipid syndrome (APS).
["This screening test checks for antibodies that can increase your risk of blood clots or other health issues."]
Key facts at a glance
- LOINC
- 7926-9
- Short code
- FLUAV Phill Ab Ser-aCnc
- Synonyms
- FLUAV Phill Ab Ser-aCnc
- 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 This Test Measures
The test detects specific antibodies (antiphospholipid antibodies) that bind to certain proteins in your blood. These antibodies can interfere with normal blood clotting processes and may contribute to conditions like clots in veins or arteries, pregnancy complications, or chronic inflammation.
How the Test Works
A small blood sample is taken and analyzed using a fluorescent antibody technique. Fluorescent dyes bind to the antibodies if they are present, allowing lab technicians to identify their presence with a microscope.
Why It’s Done
Doctors may order this test if you have symptoms like unexplained blood clots, recurrent miscarriages, skin rashes (like lupus erythematosus), or other signs of autoimmune or clotting disorders. It’s also used as part of routine screening for suspected antiphospholipid syndrome.
Sample Collection
A needle is used to draw blood from a vein in your arm. The sample is sent to the lab for testing. You may feel a slight pinch, but it usually doesn’t cause discomfort beyond that.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Anti-phospholipid Antibody Screen (Fluorescent Antibody)
Frequently asked questions
Antiphospholipid antibodies can increase your risk of developing blood clots, even if you don’t have any obvious risk factors. If the test is positive, further tests (like confirmatory assays) may be needed to assess your risk and guide treatment, if necessary.
What does a positive result mean?
How often should I get this test?
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