Urinary Tract Infection (UTI): Symptoms and Lab Tests

Understand the symptoms of urinary tract infections (UTIs) and the lab tests that help diagnose them. Learn when to consult a doctor for UTIs.

Sep 2, 2026 2 min read

Urinary tract infections (UTIs) are common infections that affect parts of the urinary system, including the bladder and urethra. They can cause discomfort and, if left untreated, lead to more serious health issues. Understanding the symptoms and the lab tests used to diagnose UTIs can help you manage this condition effectively.

What is a urinary tract infection?

A urinary tract infection (UTI) occurs when bacteria enter the urinary tract, leading to an infection. The urinary tract includes the kidneys, ureters, bladder, and urethra. Most UTIs affect the lower urinary tract, which consists of the bladder and urethra. Women are more likely to experience UTIs than men, but they can affect anyone.

Have your own lab results? Upload your report and get a clear, private AI explanation in minutes - free, in English, Russian or Hebrew.
Analyze my results

Common symptoms of a UTI

Symptoms of a UTI can vary depending on the part of the urinary tract affected. Common symptoms include:

  • A strong, persistent urge to urinate
  • A burning sensation during urination
  • Passing frequent, small amounts of urine
  • Cloudy or strong-smelling urine
  • Blood in the urine, which can appear red, bright pink, or cola-colored
  • Pelvic pain in women, especially in the center of the pelvis and around the area of the pubic bone

Lab tests used to diagnose UTIs

When you suspect a UTI, a healthcare provider may recommend lab tests to confirm the diagnosis. These tests typically include:

  • Urinalysis: This test examines a urine sample for signs of infection, such as the presence of white blood cells, red blood cells, or bacteria.
  • Urine culture: If a urinalysis indicates an infection, a urine culture can identify the specific type of bacteria causing the UTI. This helps determine the most effective antibiotic for treatment.

Risk factors and prevention

Several factors can increase your risk of developing a UTI, including:

  • Being female
  • Sexual activity
  • Certain types of birth control, like diaphragms
  • Menopause
  • Urinary tract abnormalities
  • Blockages in the urinary tract

Preventive measures include drinking plenty of fluids, urinating after sexual intercourse, and avoiding irritating feminine products.

Frequently asked questions

How are UTIs treated? UTIs are typically treated with antibiotics. The type and duration of treatment depend on the severity of the infection and the specific bacteria involved.

Can UTIs go away on their own? While some mild UTIs may resolve without treatment, it is generally recommended to seek medical advice to prevent complications.

Are UTIs contagious? UTIs themselves are not contagious, but the bacteria that cause them can be spread through sexual contact.

When to see a doctor

You should see a doctor if you experience symptoms of a UTI, especially if you have a fever, back pain, or blood in your urine. These symptoms could indicate a more serious infection requiring prompt medical attention.

Remember, this information is not a substitute for professional medical advice. Always consult with your healthcare provider for personal medical guidance.

Read this in another language

Doctor reviews: 0 - pending

This explainer is queued for our doctor panel and hasn't been individually reviewed yet. It's general information, drawn from standard references - always confirm decisions with your own clinician.

Have your own lab results? Upload your report and get a clear, private AI explanation in minutes - free, in English, Russian or Hebrew.
Analyze my results