Pet Fine Needle Aspiration

Pet Fine Needle Aspiration (FNA) is a minimally invasive diagnostic procedure performed by veterinarians to collect tissue or fluid samples from suspicious lumps, masses, or internal organs in both Large Animals and Companion Animals.

Pet Fine Needle Aspiration in Centuria, WI

This procedure aids in the diagnosis of various medical conditions, including tumors, cysts, infections, and inflammation.

a person in gloves giving an injection to a dog

Pet Fine Needle Aspiration


  • Fine needle aspiration involves using a thin, hollow needle attached to a syringe.
  • The veterinarian inserts the needle into the target area, such as a lump or organ, and creates suction by withdrawing the plunger of the syringe.
  • This suction collects a small sample of cells, tissue fragments, or fluid from the site.

Samples Collected:

  • FNA can be used to collect samples from various locations, including lumps or masses on the skin, lymph nodes, internal organs (e.g., liver, spleen, lungs), and body cavities (e.g., pleural or abdominal fluid).
  • The type of sample collected depends on the suspected condition or location of interest.

Diagnostic Use:

  • Once the samples are collected, they are placed on microscope slides or in specialized containers.
  • A veterinary pathologist or cytologist examines the samples under a microscope to analyze the cells and provide a diagnosis.
  • FNA can help identify whether a lump or mass is benign or malignant, the type of cells involved, and the presence of infection or inflammation.

Minimally Invasive:

  • FNA is a minimally invasive procedure that typically requires no anesthesia or sedation for pets.
  • It is less stressful for the animal and involves a shorter recovery time compared to more invasive surgical procedures.

Rapid Results:

  • FNA provides relatively quick results, allowing veterinarians to make timely diagnostic and treatment decisions.
Pet fine needle aspiration is a valuable diagnostic tool that aids in the early detection and management of various health issues in pets. Whether investigating a suspicious lump, assessing organ function, or diagnosing an underlying medical condition, FNA is a non-invasive and effective method for providing crucial diagnostic information and guiding appropriate care for your furry companion.