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Anti-platelet Antibody Screening (PANCA) - Serum

Published: August 9, 2026Updated: August 17, 2026

This test checks for antibodies that may target platelets, helping identify possible autoimmune conditions affecting blood clotting.

Quick summary

["A simple blood test to detect antibodies linked to certain autoimmune disorders."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
107474-9
Short code
p-ANCA.IgG Ser Ql IF
Synonyms
p-ANCA.IgG Ser Ql IF
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Critical range
0.5 N/A – —
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
CPT
82784
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 the presence of anti-platelet antibodies (PANCA) in your serum. These antibodies can interfere with normal blood clotting and may be associated with autoimmune diseases like idiopathic thrombocytopenic purpura (ITP) or other connective tissue disorders.

Why It’s Done

Your doctor may order this test if you have symptoms like easy bruising, excessive bleeding, or unexplained low platelet counts. It’s also used as part of screening for autoimmune conditions that affect blood cells.

How the Test Works

A small blood sample is taken and analyzed to identify specific antibodies that target platelets. The method used is typically an immunoassay to detect these antibodies in your serum.

What to Expect

You’ll have a quick, painless blood draw. Results may take a few days to a week, depending on lab processing times. Follow-up may include additional tests or monitoring if abnormalities are found.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

PANCA Screen

Frequently asked questions

What does a positive result mean?
A positive PANCA test indicates the presence of antibodies that may target platelets, which could be linked to autoimmune disorders affecting blood clotting. Your doctor will discuss next steps, which may include additional testing or monitoring.
Can this test be done at home?
No, this test requires a blood sample collected by a healthcare professional in a clinical setting. Home tests for specific antibodies are not standard for PANCA screening.
How long does it take to get results?
Results typically take between a few days to a week, depending on your lab’s processing schedule. Your doctor will contact you once results are available.
  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 17, 2026. · Read our editorial policy