Cystocentesis

Quick and Accurate Diagnostics

Cystocentesis is a veterinary procedure where urine for analysis is collected directly from an animal’s bladder using a thin needle. This method is considered the most accurate and least invasive way to obtain a sterile urine sample, which is necessary for comprehensive examination. Unlike natural urine collection, cystocentesis minimizes the risk of sample contamination by bacteria or cells from the urethra or reproductive organs, ensuring the most reliable results.

Why is Cystocentesis Necessary?

Cystocentesis is a key diagnostic tool when various urinary tract diseases are suspected in dogs and cats. It allows for obtaining a clean urine sample for bacterial culture, urinalysis, and other specialized tests.

Key indications for performing cystocentesis include:

• Suspected Urinary Tract Infection (UTI). This is the most common reason for the procedure. Cystocentesis precisely identifies the type of bacteria causing the infection and their susceptibility to antibiotics, which is crucial for effective treatment.
• Recurrent UTIs. If infections recur, cystocentesis helps rule out external sources of contamination and identify the true cause of the problem.
• Hematuria (blood in urine) or cloudy urine. To determine the cause of these changes, whether it’s infection, stones, or other pathologies.
• Monitoring Treatment Effectiveness. A follow-up urine analysis taken by cystocentesis helps ensure antibiotics are working and the infection is cleared.
• Inability to collect urine by other means. If the animal isn’t urinating or doesn’t allow free urine collection.

How is Cystocentesis Performed?

The cystocentesis procedure is usually quick and well-tolerated by animals. Most often, it’s performed without sedation; however, in some cases, for example, if the animal is too restless or the organ is difficult to access, mild tranquilization might be required.

The veterinarian first locates the bladder using palpation (feeling) or ultrasound examination. Ultrasound guidance is the preferred method as it allows visualization of the organ, ensures it’s full, and accurately pinpoints the needle insertion site, minimizing the risk of damaging other structures. A thin, sterile needle is then inserted through the abdominal wall directly into the bladder, and a small amount of urine is drawn into a sterile syringe. After collection, the needle is quickly removed.

The risks associated with cystocentesis are minimal but may include minor bleeding at the puncture site, which usually resolves quickly, or very rarely—perforation of the intestine if it’s close to the bladder and not sufficiently full. However, with ultrasound guidance, these risks are practically eliminated.

At our clinic, Haabersti Loomakliinik in Tallinn, we use modern equipment and strictly adhere to safety protocols when performing cystocentesis. Our veterinary specialists have extensive experience in performing this procedure, ensuring comfort for your pet and diagnostic accuracy. We’re always ready to explain the process in detail and answer all your questions regarding your pet’s health.

See also Visual diagnostics, Feline Kidney Diseases, Cat and Dog Blood in Urine or Stool