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Anti-Heterophile Antibody Screening (Qualitative Immunoassay)

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

This test detects the presence of antibodies that may react with foreign proteins, often used to help diagnose conditions like lupus or other autoimmune diseases.

Quick summary

["This screening helps identify potential autoimmune responses that may require further evaluation."]

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

Key facts at a glance

LOINC
43282-3
Short code
Heteroph Ab Ser Cont Ql
Synonyms
Heteroph Ab Ser Cont Ql
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 looks for antibodies that can bind to a specific type of protein (heterophile antigens) found in certain blood tests. These antibodies may indicate an immune system response that could be linked to conditions like lupus or other autoimmune disorders.

Why It Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms of autoimmune diseases, such as joint pain, fatigue, or unexplained fevers, or if you have a family history of such conditions.

Common Uses and Indications

This screening is often used as part of an initial evaluation for conditions like systemic lupus erythematosus (SLE) or other connective tissue diseases. It helps determine if further diagnostic testing is needed.

What to Expect Before the Test

No special preparation is usually required. You may be asked to fast for a few hours before the blood draw, but this depends on your healthcare provider’s instructions. Bring any medications you are currently taking.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Positive results suggest the presence of heterophile antibodies, which may be associated with autoimmune diseases or infections. However, false positives can occur, so further testing (like a confirmatory assay) may be needed to clarify the diagnosis.

Short name

Anti-Heterophile Antibody Screen

Frequently asked questions

What does a positive result mean?
A positive result indicates the presence of antibodies that may react with certain proteins, which can sometimes signal an autoimmune response. This does not definitively diagnose a condition but may prompt additional testing.
Can this test be used to diagnose lupus?
This test is often part of the initial screening process for conditions like lupus but is not definitive on its own. A combination of test results, symptoms, and clinical evaluation is typically needed for diagnosis.
Are there any side effects from this test?
Most people experience mild discomfort at the injection site during the blood draw. Rarely, there may be bruising or swelling, but these are usually temporary.
  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