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Fluorescent Immunoassay for Anti-Viral Antibodies (Serum) – Serially Measured

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

This test measures antibodies in your blood that your immune system produces in response to a virus, likely to track recovery or exposure over time.

Quick summary

["Helps monitor immune response to viral infections or exposure."]

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

Key facts at a glance

LOINC
57326-1
Short code
FLUAV IgM sp1 Ser IA-aCnc
Synonyms
FLUAV IgM sp1 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 (proteins made by your immune system) that target a virus. The presence and level of these antibodies can indicate whether your body has encountered the virus before or is actively responding to it. The results may be reported qualitatively (yes/no presence) or quantitatively (approximate concentration).

Why It’s Done

Your healthcare provider may order this test if you’ve been exposed to a virus, have symptoms of infection, or if you’re being monitored for conditions like chronic viral illness. It can help assess immune response, diagnose past exposure, or guide treatment decisions.

Sample Collection and Preparation

A blood sample is drawn from a vein in your arm. The serum (liquid part of blood after clotting) is separated and tested using a fluorescent immunoassay method to detect viral antibodies. Results may be reported as positive/negative or approximate levels.

What to Expect Before the Test

No special preparation is needed, but inform your provider about any medications or conditions that could affect results. Avoid alcohol for 24 hours before testing if instructed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Viral Antibody Profile (Serum)

Frequently asked questions

Will this test show if I have a current infection?
This test primarily detects antibodies produced after exposure to a virus, not active infection. It may indicate past exposure or immune response but won’t confirm a current infection without additional testing.
How long will it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Follow-up with your provider for interpretation.
Can I eat or drink before this test?
No special diet is required, but avoid alcohol for 24 hours before testing if advised by your provider to prevent potential interference with results.
  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