Skip to content

Fluorescent Immunoassay for Anti-Fluoroquinolone Antibodies (Serum/Plasma)

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

This test measures antibodies in your blood that may have developed in response to fluoroquinolone antibiotics, a class of medications used to treat bacterial infections.

Quick summary

["Helps assess immune response to fluoroquinolone antibiotics over time."]

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

Key facts at a glance

LOINC
7930-1
Short code
FLUAV+FLUBV Ab Ser-aCnc
Synonyms
FLUAV+FLUBV Ab Ser-aCnc
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 Might Be Ordered

Your healthcare provider may recommend this test if you’ve taken fluoroquinolone antibiotics recently and have questions about your immune reaction, such as after a suspected allergic or hypersensitivity reaction. It can also be used in research or clinical studies to monitor immune responses.

How the Test Works

The test uses a fluorescent immunoassay to detect specific antibodies in your serum or plasma. A small sample of your blood is analyzed to identify whether your body has produced antibodies against fluoroquinolone drugs.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in your arm. The blood is processed to separate serum or plasma, which is then tested for fluoroquinolone-specific antibodies.

What to Expect Before the Test

No special preparation is needed for this test. You may eat and drink normally as usual, but inform your healthcare provider if you’re taking any medications, including fluoroquinolone antibiotics, before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Positive results indicate the presence of antibodies against fluoroquinolone antibiotics, which may suggest an immune response (e.g., hypersensitivity or allergic reaction). However, antibody levels alone do not confirm a clinical diagnosis of allergy. This test is often used in research or specialized clinical settings to study immune responses rather than diagnosing allergies in routine practice.

Short name

Fluoroquinolone Antibody Test

Frequently asked questions

What Does a Positive or Negative Result Mean?
A positive result means your blood contains antibodies specific to fluoroquinolone antibiotics, which may indicate your immune system has recognized these drugs. However, this does not always mean you have an allergic reaction—antibodies can develop without symptoms. Consult your healthcare provider for interpretation.
Will This Test Be Used to Diagnose an Allergy?
No, this test alone cannot diagnose an allergy to fluoroquinolone antibiotics. Antibody detection is useful in research or specific clinical studies but is not a standard diagnostic tool for allergies. Your provider may use other methods, such as skin testing or symptom history, for allergy evaluation.
How Often Should I Get This Test?
The frequency depends on your clinical situation. Your healthcare provider will determine if repeated testing is needed, such as in research protocols or if monitoring immune responses to fluoroquinolone exposure is required.
  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