Urinalysis examines characteristics of urine. A urine culture checks for organisms that grow from the sample. One is not simply a faster or slower version of the other.
What each process contributes
A urinalysis may examine appearance, chemical findings, and material seen under a microscope. A culture uses the sample to investigate bacteria or other organisms. The order and laboratory method determine exactly what is reported.
| If the report describes… | You are likely looking at… |
|---|---|
| Chemical reactions, cells, or physical properties | Urinalysis findings |
| Organism growth and identification | Culture findings |
| Whether an organism responds to tested medicines | A related susceptibility assessment, when performed |
Seeing bacteria on a urinalysis is not the same as receiving a completed culture report. A clinician may consider symptoms and collection quality when deciding what either finding means.
Collection affects the comparison
Many routine samples use a clean-catch method to reduce contamination from surrounding skin. Follow the supplied instructions and use the correct container. The method may differ for another urine test, so do not transfer instructions solely because both samples are urine.
Record the collection time and follow storage and delivery requirements. Tell the team if the sample spilled or the inside of the cup was touched. Those details can help explain whether a repeat collection is needed.
Avoid a premature conclusion
A preliminary finding should not be treated as the final answer from a different test. Likewise, the presence of organisms does not let a reader select an antibiotic from a report without clinical assessment.
Ask which result is complete, whether anything remains pending, and who will discuss the combined findings. Seek medical advice for concerning symptoms rather than waiting for a culture to settle every question about urinary health.
Sources
- MedlinePlus: Urinalysis
Physical, chemical, and microscopic examination of urine.
- MedlinePlus: Urine culture
Culture checks for organisms and differs from routine urinalysis.
- MedlinePlus: Clean-catch urine sample
Collection minimizes contamination; avoid touching the container interior.