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Fluorescein Avidin Binding Protein (Serum) Quantitative

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

This test measures the level of a protein in your blood that binds to fluorescein, a dye used in certain diagnostic tests. It may be part of an evaluation for conditions affecting protein binding or dye metabolism.

Quick summary

["This test helps assess how your body processes certain dyes and may be used in specialized diagnostic procedures."]

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

Key facts at a glance

LOINC
50704-6
Short code
FLUAV NP RNA Islt Ql Seq
Synonyms
FLUAV NP RNA Islt Ql Seq
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
sequencing
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

The test detects the concentration of fluorescein-binding protein in your serum. This protein plays a role in how fluorescein (a fluorescent dye) interacts with other substances in your body, which can be important in specific diagnostic contexts.

Why It Might Be Ordered

Your healthcare provider may order this test if you’re undergoing procedures involving fluorescein dye, such as fluorescein angiography (used to examine blood vessels in the eyes) or other imaging studies. It could also be part of research or specialized clinical evaluations.

Sample Collection and Preparation

A blood sample is drawn from a vein in your arm. The serum portion (liquid after blood clotting) is separated and sent to the lab for analysis. This test does not require fasting.

What to Expect Before the Test

No special preparation is needed beyond standard blood draw precautions. You may experience mild discomfort, but it’s temporary. Avoid heavy meals or strenuous activity before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Fluorescein Avidin Binding Protein (Serum)

Frequently asked questions

When might I need this test?
This test is usually ordered only when you’re undergoing procedures involving fluorescein dye, such as eye imaging or other diagnostic studies. Your doctor will explain the specific reason during your appointment.
What does a high or low result mean?
Results are interpreted by your healthcare provider based on the clinical context. Abnormal levels may suggest issues with dye metabolism or protein binding, but this test alone does not diagnose conditions—it’s part of a larger evaluation.
Is fasting required for this test?
No fasting is required. Blood is drawn at a convenient time for you, and the test focuses on the protein content in serum, not glucose or other substances affected by diet.
  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