Search all medical codes

Fluorescent noninfectious agent antibody; screen, each antibody

CPT4 code

Name of the Procedure:

Fluorescent Noninfectious Agent Antibody Screen (Fluorescent Antibody Test, Noninfectious Agent Antibody Detection)


This test uses fluorescent dyes to detect the presence of specific noninfectious antibodies in a patient's blood sample. By tagging antibodies with a fluorescent marker, healthcare providers can see if a patient has been exposed to certain antigens without being infected by a pathogen.


This test is used to identify whether a patient has developed antibodies against noninfectious agents, such as allergens or autoimmune components. It helps in diagnosing conditions like allergies or autoimmune diseases and assists in tailoring appropriate treatments.


  • Unexplained allergic reactions
  • Suspected autoimmune disorders
  • Chronic inflammatory conditions
  • Monitoring of known autoimmune diseases, such as lupus or rheumatoid arthritis


  • No special preparation is usually needed.
  • Inform your healthcare provider about any medications or supplements you are taking.
  • You may need to provide a detailed medical history or previous test results.

Procedure Description

  1. A healthcare provider will draw a small blood sample using a needle and syringe.
  2. The blood sample is then treated with specific fluorescent-labeled antibodies in a laboratory.
  3. These labeled antibodies will bind to any target antibodies present in the sample.
  4. The sample is examined under a fluorescent microscope to detect and quantify the presence of bound fluorescent antibodies.
  5. Results are analyzed and reported back to your healthcare provider.

Tools and Equipment:

  • Needle and syringe for blood collection
  • Fluorescent dyes
  • Fluorescent microscope

Anesthesia or Sedation:

  • Not required, as only a standard blood draw is necessary.


The blood draw itself takes about 5-10 minutes. The testing and analysis in the laboratory may take several hours to a few days, depending on the facility.


The blood draw is usually performed in a hospital, outpatient clinic, or a diagnostic lab. The actual laboratory analysis is conducted in specialized clinical labs.


  • Phlebotomist or nurse for blood collection
  • Medical laboratory technologists for test analysis

Risks and Complications

  • Minor discomfort or bruising at the blood draw site
  • Rare risk of infection at the puncture site
  • False positives or negatives, depending on test accuracy and sample handling


  • Non-invasive and relatively simple to conduct.
  • Helps in early detection and management of allergies and autoimmune diseases.
  • Provides specific information on antibody presence, aiding in accurate diagnosis and treatment planning.


  • Minimal recovery time needed, as it’s just a blood draw.
  • Keep the puncture site clean and dry.
  • Any bruising typically resolves in a few days.


  • Enzyme-linked immunosorbent assay (ELISA) for antibody detection
  • Radioimmunoassay (RIA) for measuring specific antibodies
  • Clinical evaluation and other relevant imaging or diagnostic tests

Pros and Cons Compared to Alternatives:

  • Fluorescent screening is relatively quick and specific but requires specialized equipment.
  • ELISA and RIA are also specific but may take longer and involve radioactive materials.

Patient Experience

  • You might feel a brief sting or slight pain when the needle is inserted.
  • Mild soreness or bruising at the puncture site might occur afterward.
  • Overall, discomfort is generally minimal and quickly resolves.

Similar Codes

Contact us to learn more

Choose your own adventure


Send us a message or questions and we can share more details.


Setup a calendar meeting with us; find a time now.