Myeloperoxidase Antibody (Serum) - Immunoassay
This test measures the presence of antibodies against myeloperoxidase, an enzyme found in white blood cells. It may help diagnose conditions like autoimmune diseases or certain blood disorders.
["This test can support diagnosis of conditions linked to immune system activity or blood cell abnormalities."]
Key facts at a glance
- LOINC
- 81771-8
- Short code
- Myeloperoxidase IgG Ser Ql IB
- Synonyms
- Myeloperoxidase IgG Ser Ql IB
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ib
- 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
Why This Test Might Be Ordered
Your doctor may recommend this test if you have symptoms or a medical history suggestive of conditions like autoimmune diseases (e.g., lupus, rheumatoid arthritis), certain blood cancers, or other immune-related disorders. It may also be used in research or specialized diagnostic settings.
What to Expect Before the Test
No special preparation is usually needed. You’ll provide a blood sample, typically drawn from a vein in your arm. If you’re on blood-thinning medication, let your doctor know before the test.
What the Test Results Mean
Results may indicate abnormal immune activity or the presence of specific antibodies. Elevated levels could suggest autoimmune conditions or other immune-related issues, but results alone don’t diagnose a condition. Your doctor will interpret results in the context of your symptoms and medical history.
Common Conditions Linked to This Test
This test is often used to help identify conditions where antibodies against myeloperoxidase play a role, such as certain types of vasculitis (inflammation of blood vessels) or autoimmune hemolytic anemia (a condition where your body attacks its own red blood cells).
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Myeloperoxidase Antibody (IgG)
Frequently asked questions
What does a positive or elevated result mean?
Can this test be used to diagnose a specific disease?
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