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Culture, Urine
Test CodeURNC
Includes
If culture is positive, Identification will be performed at an additional charge. Antibiotic susceptibilities are only performed when appropriate
Preferred Specimen
4 mL random, clean catch, midstream urine collection
Minimum Volume
0.5 mL
Other Acceptable Specimens
Indwelling catheter collected urine • Unpreserved specimens less than 3 mL or from pediatric or from patients with renal abnormalities are acceptable when placed in a sterile leak-proof container. (Specimens from long term care and/or pediatric difficult collections only)
Instructions
Send to lab ASAP
Transport Container
Sterile container
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Ambient: 2 hours
Regrigerated: 24 hours
Regrigerated: 24 hours
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Preserved urine, received frozen
Methodology
Culture
Setup Schedule
24/7
Report Available
3 days
Clinical Significance
This culture is designed to quantitate the growth of significant bacteria when collected by the Clean Catch Guidelines or from indwelling catheters. Quantitative culturing of urine is an established tool to differentiate significant bacteruria from contamination introduced during voiding. This test has a reference range of less than 1,000 bacteria per mL. More than 95% of Urinary Tract Infections (UTI) are attributed to a single organism. Infecting organisms are usually present at greater that 100,000 per mL, but a lower density may be clinically important. In cases of UTI where more than one organism is present, the predominant organism is usually significant and others are probably urethral or collection contaminants. When multiple organisms are isolated from patients with indwelling catheters, UTI is doubtful and colonization likely.
