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Plasminogen Activator Inhibitor-1 (PAI-1) Antibody, Qualitative Probe (Serum/Plasma)

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

This test checks for the presence of antibodies against Plasminogen Activator Inhibitor-1 (PAI-1) in your blood, which may help identify certain blood clotting or autoimmune conditions.

Quick summary

["PAI-1 antibodies can signal potential clotting disorders or immune responses that may require further medical evaluation."]

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

Key facts at a glance

LOINC
101307-7
Short code
P vivax+ovale DNA Bld Ql NAA+non-probe
Synonyms
P vivax+ovale DNA Bld Ql NAA+non-probe
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
non-probe-amp-tar
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like unexplained bruising, excessive bleeding, or if you have a history of clotting disorders, autoimmune diseases, or if you’re being evaluated for conditions like antiphospholipid syndrome or thrombophilia.

What to Expect Before the Test

No special preparation is needed. You may have a simple blood draw, and the sample will be tested for PAI-1 antibodies using a qualitative probe method. Results are typically qualitative (positive/negative) rather than quantitative.

What the Results Mean

A positive result indicates the presence of PAI-1 antibodies, which may suggest an underlying immune or clotting-related condition. A negative result means no detectable antibodies were found in this test. Follow-up testing or additional evaluation may be needed based on clinical context.

Common Conditions Linked to PAI-1 Antibodies

Elevated or abnormal PAI-1 antibody levels can be associated with conditions like antiphospholipid syndrome, autoimmune disorders, or hypercoagulable states (increased risk of blood clots). These findings may guide further diagnostic testing or treatment planning.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

PAI-1 Antibody Screening

Frequently asked questions

What does a positive result mean for my health?
A positive result suggests you may have an immune response targeting PAI-1, which could be linked to conditions affecting blood clotting or autoimmune activity. Your doctor will discuss next steps, which may include additional tests or monitoring to assess your risk or symptoms.
Can I stop taking medications before this test?
Generally, you do not need to stop medications unless your doctor specifically instructs you. Some medications (like blood thinners) may affect blood clotting, but this test focuses on antibodies rather than direct clotting factors. Always follow your provider’s guidance.
How long will it take to get my results?
Results are typically available within 1–3 business days, depending on lab processing times. Your healthcare provider will contact you with the outcome and any recommendations.
  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