Skip to content

Fluoroimmunoassay for Anti-Viral Antibodies (Serum)

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

This test measures antibodies your immune system produces in response to a viral infection, helping identify past exposure to certain viruses.

Quick summary

["This test helps determine if you’ve had exposure to a specific virus, aiding in diagnosis or monitoring immunity."]

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

Key facts at a glance

LOINC
47312-4
Short code
FLUAV IgM Ser IA-aCnc
Synonyms
FLUAV IgM Ser IA-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
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

This test detects specific antibodies (immunoglobulins) in your serum that target a particular virus. Antibodies are proteins your body makes to fight infections. The presence of these antibodies suggests your immune system has encountered the virus before, either through infection or vaccination.

Why It’s Done

Doctors may order this test to confirm a past infection with a virus (e.g., flu, certain coronaviruses, or others), assess immunity after vaccination, or evaluate exposure in research or public health settings.

Sample Collection and Preparation

A blood sample is drawn from a vein in your arm. The blood is processed to separate serum (the liquid part without clotting factors), which is then tested for the presence of antibodies using a specialized immunoassay method.

Interpretation and Limitations

Results are qualitative (positive/negative) and indicate whether antibodies were detected. However, they don’t confirm a current infection or provide details about the virus’s severity. False positives or negatives can occur, especially with recent or past exposures.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Anti-Viral Antibody Screening (Serum)

Frequently asked questions

Could my test results affect my treatment or future care?
Results may guide decisions about vaccination, monitoring for reinfection, or research participation but won’t replace diagnostic tests for active illness. Always discuss results with your healthcare provider.
What does a positive result mean?
A positive result means your immune system has likely encountered the virus before, but it doesn’t confirm a current infection. It may indicate past exposure or immunity.
How long will it take to get my results?
Results are typically available within 1–3 business days, depending on lab processing times. Your healthcare provider will contact you with the final report.
  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