Quick Facts
- Sample: Urine (clean-catch, midstream)
- Fasting: Not required
- Turn-around: Approximately 3-5 business days. May take longer based on weather, holiday, or lab delays.
Benefits
- Confirms or rules out a bacterial UTI with greater accuracy than a dipstick alone.
- Identifies the specific organism causing your infection, so treatment is targeted.
- Includes susceptibility testing when warranted, helping match the right antibiotic to your infection.
- Non-invasive—requires only a simple urine sample, no needles or procedures.
- Available through direct-access ordering; no specialist referral required.
- Helps prevent unnecessary antibiotic use by providing culture-backed results.
Who Is This Test For?
- People with UTI symptoms such as burning, urgency, frequency, cloudy urine, or lower back pain.
- Individuals with recurrent UTIs or symptoms that did not resolve with initial treatment.
- Pregnant women being screened for asymptomatic bacteriuria, which affects 2–10% of pregnancies and raises the risk of preterm delivery and low birth weight.
- Patients with complicated urinary conditions, including catheter use, urinary retention, kidney stones, or diabetes. (CDC, 2024)
- People who need a culture-based answer before changing or starting antibiotic therapy.
- Anyone whose urinalysis (UA) result indicated a possible UTI and needs confirmatory testing.
How It Works – Just 3 Steps
- Order & prepare — Purchase the test online. If you are currently taking antibiotics, note this when ordering, as it may reduce culture yield. Avoid collecting during menstruation if possible.
- Collect your sample —Follow the clean-catch, midstream urine instructions provided by your chosen lab. Deliver the sample promptly; room-temperature delays can distort bacterial counts. For women, up to three collections may be needed for the most accurate identification; for most men, one collection is sufficient
- Review your results — Results are typically ready in 3-5 business days.
FAQ
What exactly does this test include? This test includes culture, quantitation, isolation, and identification of organisms. Susceptibility testing is also performed on detected organisms at colony counts greater than 10,000 colonies/mL when culture results warrant it.
What is the difference between a urine culture and a urinalysis? A urinalysis quickly screens for signs of infection using a dipstick or microscopy. A urine culture actually grows any microorganisms present, giving a definitive identification and quantification that a urinalysis alone cannot provide. (Cambridge Core, 2023)
Can the results be wrong? Yes. Poor collection technique, delayed transport, or contamination can produce misleading results. Following the clean-catch instructions carefully—and delivering your sample promptly—minimizes this risk.
Should I order this test if I have no symptoms? Generally, no. A urine culture is not recommended as a wellness screen without symptoms. It is most useful when urinary symptoms are present or when a clinician needs a culture-based answer before prescribing or changing antibiotics. (CDC, 2024)
What if more than one organism is detected? Mixed flora with low colony counts often suggests sample contamination rather than true infection. Your clinician will consider your symptoms, collection quality, and the number of organisms identified before drawing conclusions.
How common are UTIs? Very common. A 2024 analysis of U.S. office-based data reported approximately 9.8 million UTI-related visits annually, with 42.2% classified as complicated UTIs requiring careful diagnostic follow-up. (ISPOR, 2024)
More Details
What is the purpose of this test?
A routine urine culture grows microorganisms from your urine sample to determine whether a urinary tract infection is present and, if so, which bacteria or yeast are responsible. Unlike a dipstick or urinalysis, it provides definitive identification and quantification of the causative organism. When a significant pathogen is detected above 10,000 colonies/mL, susceptibility testing is added to guide antibiotic selection.
Who would benefit from this test?
You benefit most from this test if you have symptoms such as burning urination, urgency, frequency, or pelvic discomfort. It is also valuable for recurrent infections, symptoms that did not improve after initial treatment, catheter-associated concerns, or complicated urinary conditions. A 2023 review noted that by age 18 at least 10% of females have been diagnosed with a UTI, and by age 24, about one in three have been treated for one. (NCBI / StatPearls, 2023)
When should I order a Urine Culture, Routine?
Order this test when urinary symptoms are present—burning, urgency, frequency, cloudy or foul-smelling urine, lower back or flank pain—or when a urinalysis has flagged a possible infection needing confirmation. It is also appropriate when symptoms persist after initial antibiotic treatment or when your clinician wants culture guidance before prescribing. It is not recommended as a routine wellness screen without symptoms. (CDC, 2024)
How do I interpret the results?
- No growth — No significant bacteria detected; true infection is unlikely. Discuss other causes of symptoms with a clinician.
- Low-count mixed flora — Likely contamination from collection. Repeat with careful clean-catch technique if symptoms persist.
- Single organism ≥ 10,000 colonies/mL — Significant bacteriuria; supports a UTI diagnosis. Review susceptibility results and initiate or adjust treatment.
- Organism identified + susceptibilities — Pathogen confirmed with antibiotic sensitivities reported. Match antibiotic therapy to the sensitivity profile.
Fast fact: A 2023 multicenter study of over 221,000 encounters found that no single urinalysis parameter had both high sensitivity and high specificity for predicting significant bacteriuria—reinforcing why culture confirmation matters when the clinical picture is unclear. (Cambridge Core, 2023)
Disclaimer:Reference ranges may vary by laboratory. Listed ranges are general guidelines and may differ from those used by the performing lab. Always consult your healthcare provider for interpretation.
Pre-test preparation
No fasting is required. Collect your sample using the clean-catch, midstream technique according to lab instructions—this reduces contamination and improves result accuracy. Avoid collecting during menstruation if possible. If you are currently taking antibiotics, inform your ordering clinician, since active antibiotic therapy can suppress bacterial growth and reduce culture yield.
How often should I get tested?
- New or first UTI symptoms — Order when symptoms appear; no routine rescreening needed if symptoms resolve.
- Recurrent UTIs (≥ 2 per year) — With each new symptomatic episode, or as directed by your clinician.
- Symptoms not improving after treatment — Re-test to assess treatment response and check for resistance.
- Pregnancy (screening for asymptomatic bacteriuria) — As recommended by your prenatal care provider.
- Catheter-associated or complicated UTI — Per clinician guidance; not on a fixed schedule.
- Repeat testing is generally symptom- or treatment-driven rather than based on a fixed schedule. (CDC, 2024)
Why early detection matters
UTIs are among the most common outpatient infections in the United States, accounting for nearly 9.8 million annual visits. When left unconfirmed or treated empirically with the wrong antibiotic, infections can progress to kidney involvement, become harder to treat due to resistance, or recur. Culture-based diagnosis ensures therapy is matched to the actual organism, reducing the risk of treatment failure, antibiotic resistance, and complications such as pyelonephritis. For pregnant women, untreated bacteriuria significantly increases the risk of preterm delivery and low birth weight. (ISPOR, 2024; NCBI / StatPearls, 2023)
Related tests you may consider
Urinalysis, Routine With Microscopic Examination on Positives — Checks your urine for signs of infection, kidney or liver problems, or other health issues by testing things like color, sugar, protein, and blood—and includes a closer look under a microscope if certain results are abnormal.
Urine Culture, Urology Workup — Detects and identifies bacteria causing urinary tract infections (UTIs) and includes antibiotic susceptibility testing (AST) to determine the most effective treatment when bacterial growth is present.
Comprehensive Metabolic Panel (CMP-14) with eGFR Blood Test — Evaluates nutrient levels, liver, and kidney function.
