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Anti-Heterophile Antibody (Qualitative) Test

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

This test checks for antibodies that may react with certain proteins found in blood, often used to evaluate conditions like lupus or other autoimmune diseases.

Quick summary

["This test helps identify potential autoimmune disorders by detecting unusual antibody responses."]

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

Key facts at a glance

LOINC
31418-7
Short code
Heteroph Ab Ser Ql
Synonyms
Heteroph Ab Ser 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

Why This Test Is Done

Your doctor may order this test if you have symptoms like joint pain, fatigue, or rash that could suggest an autoimmune condition. It can also be part of a broader evaluation for conditions such as lupus or other connective tissue diseases.

What to Expect Before the Test

No special preparation is needed. You may have a blood sample drawn from a vein in your arm, similar to other routine blood tests. The process usually takes a few minutes.

What the Test Results Mean

A positive result means your body has produced antibodies that may react with certain proteins. This can be a sign of an autoimmune condition, but it does not confirm a diagnosis alone. Your doctor will consider the results alongside other tests and symptoms.

Common Conditions Monitored

This test is often used to screen for conditions like systemic lupus erythematosus (SLE) or other autoimmune diseases where heterophile antibodies may play a role, though results can vary and are not definitive on their own.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Anti-Heterophile Antibody (Qual)

Frequently asked questions

What does a positive result mean?
A positive result indicates the presence of antibodies that may react with certain proteins in your blood. This can be a marker for autoimmune diseases but does not confirm a diagnosis by itself. Your doctor will discuss next steps based on your symptoms and other test results.
Can this test be used to diagnose lupus?
This test can help identify certain antibodies associated with autoimmune conditions like lupus, but it is not the sole test used for diagnosis. Doctors rely on a combination of test results, symptoms, and clinical evaluation to make a diagnosis.
How often should I get this test?
Frequency depends on your medical condition and doctor’s recommendations. If you have an autoimmune disease, your doctor may order this test periodically to monitor your condition. Follow their guidance for scheduling.
  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