Heterophile Antibody (Mono Screen) Test
This test measures heterophile antibodies in a blood sample, a marker Quest associates with infectious mononucleosis, caused by the Epstein-Barr virus.
About this test
Heterophile, Mono Screen looks for heterophile antibodies in a 1 mL serum sample using an agglutination method. Quest describes these antibodies as associated with infectious mononucleosis, an illness caused by the Epstein-Barr virus.
Mono Screen looks at one marker only. Quest's description ties heterophile antibody presence specifically to infectious mononucleosis, so a positive or negative result is read together with the timing of symptoms and, when needed, other findings, rather than standing alone.
Test details
| Collection | Quest patient service center |
|---|
Quest resources
Additional details
What this test looks at
The test reports the presence or absence of heterophile antibodies in a 1 mL serum sample, using an agglutination method. Quest also lists this product under the names Mono Screen and Infectious Mononucleosis, all referring to the same measurement.
This test isn't part of the Celio Health store at the moment, so it can't be ordered or requested here. The test menu lists everything that can.
Laboratory results should always be interpreted by a licensed clinician who knows your health history. This page is information about a test, not medical advice.
Frequently asked questions
What does this test measure?
It measures heterophile antibodies in a serum sample, using an agglutination method. Quest associates these antibodies with infectious mononucleosis.
How is the sample collected?
The test uses a 1 mL serum sample from a routine blood draw.
Do I need to prepare for this test?
No preparation instructions are listed for this test, though people follow any instructions their ordering clinician provides.
How soon can this test detect mononucleosis?
Quest notes heterophile antibodies may appear as early as the fourth day of illness, with about 90% of people testing positive by the twenty-first day.
Is "Mono Screen" the same test?
Yes. Quest lists this product under the names Mono Screen and Infectious Mononucleosis; they refer to the same heterophile antibody measurement.