InstalabUTI Screen
Should you take a UTI Screen test?
This test is most useful if any of these apply to you.
34 biomarkers included
- Acinetobacter baumanniiAn opportunistic gram-negative organism common in healthcare settings and known for drug resistance.Raises concern for a resistant, healthcare-associated infection needing specialist input.
- Actinobaculum schaaliiA slow-growing organism that standard culture frequently overlooks, more common in older adults.Captures a fastidious cause of infection that culture routinely fails to grow.
- Aerococcus urinaeA fastidious gram-positive organism increasingly recognized as a true uropathogen in older adults, and often missed by culture.A culture-missed organism that can drive genuine infection, particularly in older adults.
- Citrobacter freundiiA gram-negative organism that can cause complicated and recurrent urinary infections.Points toward a complicated infection that may resist common first-line drugs.
- Citrobacter koseriA gram-negative organism occasionally responsible for urinary infections, especially in vulnerable hosts.Suggests a less common bacterial cause worth confirming with susceptibility testing.
- Corynebacterium urealyticumA slow-growing, urea-splitting organism tied to encrusted bladder infections and stones, often missed by culture.A culture-elusive organism linked to alkaline, stone-forming infection.
- Enterobacter complexA group of gram-negative bacteria linked to hospital-related and complicated urinary infections.Flags an organism group prone to developing resistance during treatment.
- Enterococcus faecalisOne of the most commonly detected organisms on molecular panels, often part of mixed infections.A common co-detected organism that needs symptom and inflammation correlation, since it can also colonize harmlessly.
- Enterococcus faeciumA gram-positive organism related to E. faecalis but more often resistant, including to vancomycin.Matters because this species can be harder to treat than E. faecalis.
- Escherichia coliThe single most common cause of urinary tract infections and the organism culture grows best.A strong positive fits typical cystitis and anchors first-line antibiotic choice.
- Klebsiella aerogenesA gram-negative organism (once grouped with Enterobacter) seen in healthcare-associated and complicated infections.Suggests a complicated infection that can carry inducible antibiotic resistance.
- Klebsiella oxytocaA gram-negative relative of K. pneumoniae that can cause cystitis and more complex infections.Points to a Klebsiella-genus infection that may need targeted, culture-confirmed antibiotics.
- Klebsiella pneumoniaeA frequent gram-negative uropathogen that culture sometimes undercounts, often behind infections that resist first attempts at treatment.Frequently detected by genetic testing when culture misses it, and often carries broader antibiotic resistance.
- Morganella morganiiA gram-negative, urea-splitting organism seen in complicated and catheter-associated infections.Often carries notable antibiotic resistance and signals a complicated infection.
- Pantoea agglomeransAn environmental gram-negative organism that occasionally causes infection, sometimes after plant-material exposure or injury.An uncommon finding that usually warrants confirmation and clinical correlation.
- Proteus mirabilisA urea-splitting gram-negative organism tied to alkaline urine, stones, and hard-to-clear infection.Its presence raises concern for kidney stones and recurrent or catheter-associated infection.
- Proteus vulgarisA urea-splitting gram-negative organism related to P. mirabilis, tied to alkaline urine and stones.Like its cousin, it raises concern for stone formation and persistent infection.
- Providencia stuartiiA gram-negative organism strongly associated with long-term catheter use and persistent infection.Detection points to catheter-associated and frequently multidrug-resistant infection.
- Pseudomonas aeruginosaAn opportunistic gram-negative organism common in complicated, catheter-related, or previously treated infections.Often resistant to standard oral antibiotics, so detection can change the treatment plan.
- Serratia marcescensA gram-negative organism linked to healthcare-associated and complicated urinary infections.Suggests a complicated or healthcare-related infection that often needs tailored antibiotics.
- Staphylococcus aureusA gram-positive organism that in urine can signal infection seeded from the bloodstream.In urine it can be a clue to infection spreading from elsewhere, meriting closer evaluation.
- Staphylococcus saprophyticusA gram-positive organism that causes cystitis mainly in younger, sexually active women.A classic cause of uncomplicated cystitis in young women that quick dipstick workups can overlook.
- Streptococcus agalactiaeGroup B Strep, a gram-positive organism that can cause urinary infection and matters especially in pregnancy.Particularly relevant in pregnancy, where it affects delivery planning.
- Streptococcus anginosusA gram-positive organism that can occasionally cause urinary infection and abscess formation.An uncommon urinary finding that can point to deeper or abscess-related infection.
- Chlamydia trachomatisA sexually transmitted organism that inflames the urethra and can cause burning mistaken for a bladder infection.Explains urinary symptoms when bacterial cultures are negative, and requires different treatment than a UTI.
- Lymphogranuloma venereumAn aggressive strain of the chlamydia organism causing more invasive genital and lymphatic infection.Signals a more serious chlamydial infection needing a longer, specific antibiotic course.
- Neisseria gonorrhoeaeA sexually transmitted organism causing urethritis with burning urination that can mimic a urinary infection.A positive points to gonorrhea rather than a bladder infection and changes treatment entirely.
- Mycoplasma genitaliumA hard-to-culture sexually transmitted organism and a leading cause of non-gonococcal urethritis.Identifies a frequently missed cause of persistent urethral symptoms.
- Mycoplasma hominisA genital organism that often lives harmlessly but can contribute to symptoms in some settings.Usually a colonizer; significance depends on symptoms and other findings, not the positive alone.
- Ureaplasma urealyticumA genital organism with pathogenic potential in urethritis, though frequently present without symptoms.More likely than U. parvum to matter clinically, but still needs correlation with symptoms.
- Ureaplasma parvumA common genital commensal detected in many symptom-free people.Usually reflects colonization rather than active infection and rarely needs treatment on its own.
- Trichomonas vaginalisA sexually transmitted parasite that causes genital irritation and burning overlapping with urinary symptoms.Identifies a treatable parasitic cause of painful urination that standard urine testing misses.
- Candida albicansThe most common yeast found in urine, which can mean true fungal infection or harmless colonization.Meaning depends on symptoms and host risk; species identification guides whether standard antifungals will work.
- Candida speciesNon-albicans yeasts that can appear in urine and may resist the usual antifungal drugs.Identifying non-albicans yeast matters because some resist fluconazole, the standard first-line antifungal.
About UTI Screen
You have the burning, the urgency, the constant need to go, and your urine culture comes back negative. That happens far more often than most people realize, and it rarely means nothing is wrong. A standard culture is built to grow a handful of common bacteria in a dish, and it quietly misses much of the rest.
This panel works differently. Instead of waiting for microbes to grow, it reads their genetic fingerprints straight from your urine using a method that copies and detects microbial DNA (called PCR), screening for more than thirty bacteria, yeasts, and sexually transmitted organisms in a single run.
What This Panel Reveals
The core value here is breadth. A urinary tract infection (a UTI) is usually blamed on one organism, most often Escherichia coli, because that is what routine culture grows best. In symptomatic people tested with genetic methods, the picture is messier: across a study of 36,586 samples, PCR found an organism in 52.3 percent of specimens versus 33.9 percent by culture.
Some of the most useful additions are organisms that standard culture is biased against. Slow-growing bugs like Aerococcus urinae, Actinobaculum schaalii, and Corynebacterium urealyticum are increasingly recognized as real causes of infection, especially in older adults, yet routine plates often overlook them. One older study detected Actinobaculum schaalii by PCR in 22 percent of urine samples from people over 60, far more than culture suggested.
The panel also covers sexually transmitted look-alikes. Chlamydia, gonorrhea, trichomonas, and Mycoplasma genitalium all inflame the urethra and can cause burning that feels exactly like a bladder infection, but they need completely different treatment. Rounding things out are genital organisms that usually just live there quietly (Ureaplasma and Mycoplasma hominis) and yeasts (Candida), whose meaning depends heavily on whether you have symptoms.
How to Read Your Results Together
A positive result is a starting point, not a verdict. Because genetic detection is so sensitive, it can pick up organisms that are colonizing you rather than causing your symptoms. The pattern of what is found, plus whether you have symptoms and inflammation, is what turns a list of organisms into a diagnosis.
| What You See | What It May Mean |
|---|---|
| Escherichia coli positive, with symptoms | The classic bladder infection pattern, confirming a common and usually treatable cause. |
| Several bacteria positive together | A mixed (polymicrobial) pattern, more common with catheters, recurrence, or older age. A clinician has to sort the driver from the bystanders. |
| Chlamydia, gonorrhea, or trichomonas positive | Your symptoms may be a sexually transmitted infection rather than a bladder infection, and treatment differs entirely. |
| Ureaplasma, Mycoplasma hominis, or Candida positive without symptoms | Often colonization rather than true infection, and a positive alone rarely justifies antibiotics. |
Mixed results are common in the people who need this test most. In symptomatic older adults, about 40 percent had two or more organisms detected, and most culture-missed detections were accompanied by inflammatory markers of real infection. That combination, organisms plus inflammation plus symptoms, is what separates infection from harmless carriage.
What to Do with Your Results
Bring any positive result to a clinician who can match it to your symptoms. If bacteria are found, a standard urine culture remains useful alongside this panel, because culture measures how the organism actually responds to specific antibiotics, which genetic testing infers less reliably. If a sexually transmitted organism turns up, treatment shifts to that infection and partner notification becomes part of the plan.
This is not a test to run on repeat for tracking. Reorder it when a new symptomatic episode appears, when symptoms persist despite treatment, or to confirm that a stubborn infection has actually cleared. If your results keep showing complicated or resistant organisms, that is a reason to see a urologist rather than to keep cycling through antibiotics.
When Results Can Be Misleading
Two panel-wide cautions matter. First, genetic detection can find nonliving or colonizing organisms, so in a person with no symptoms it tends to detect microbes that are not causing disease. For that reason it is not a screening test for people who feel fine. Second, in women, urine is a weaker sample than a vaginal swab for sexually transmitted organisms, with pooled sensitivity of 86.9 percent versus 94.1 percent for chlamydia, so a negative urine result does not fully rule these out.
These panels are also an emerging tool rather than a settled standard. No major medical society yet endorses them as routine, standardized interpretation frameworks are still developing, and results are best read together with symptoms and, where possible, culture. Used that way, in the right person, they can name a cause that a basic culture leaves invisible.