Urinalysis, Complete With Microscopic Examination With Reflex to Urine Culture, Routine
Use
Detect abnormalities of urine; diagnose and manage renal diseases, urinary tract infection, urinary tract neoplasms, systemic diseases, and inflammatory or neoplastic diseases adjacent to the urinary tract.
Special Instructions
A voided specimen is typically suitable for analysis. If the sample is likely to be contaminated, a clean-catch midstream specimen is recommended. Proper transportation and storage are essential to maintain the viability of the specimen, with specific conditions required for preserved and non-preserved samples.
Limitations
Insufficient volume of urine may limit the number of analyses that can be performed. Presence of Pyridium metabolites may lead to color interference in dipstick reactions. High intake of vitamin C can falsely lower glucosuria levels or result in a false-negative nitrite test. The survival of white blood cells in the sample decreases with low osmolality, increased alkalinity, or lack of refrigeration.
Methodology
Other
Biomarkers
LOINC Codes
- 58077-9
- 5811-5
- 5803-2
- 5778-6
- 5767-9
- 5799-2
- 20454-5
- 25428-4
- 2514-8
- 5794-3
- 5770-3
- 20405-7
- 5802-4
- 12235-8
- 11279-7
Result Turnaround Time
2-5 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
3-9 mL (preferred) or 2 mL or greater (non-preserved urine)
Minimum Volume
Not provided
Container
Vacutainer® red/yellow urine transport tube (preferred) or urine bottle/urine transport tube (non-preserved) and Vacutainer® gray-top urine culture transport tube with preservative
Collection Instructions
A voided specimen is usually suitable. If the specimen is likely to be contaminated, a clean-catch midstream specimen is desirable.
Storage Instructions
Vacutainer® red/yellow urine transport tube: room temperature for up to 72 hours; Urine bottle/urine transport tube (non-preserved): room temperature up to 2 hours and refrigerated up to 48 hours; Vacutainer® gray-top urine culture transport tube: maintain at room temperature
Causes for Rejection
Urinalysis ONLY: quantity not sufficient for analysis; improper labeling; tubes with boric acid or tartaric acid; specimen received in red/yellow tube more than 72 hours old; specimen received in urine cup stored at room temperature more than 2 hours old; specimen received in urine cup refrigerated more than 48 hours old; frozen specimens. Culture ONLY: quantity not sufficient for analysis; improper labeling; frozen specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Up to 72 hours (if preserved); Up to 2 hours (non-preserved) |
| Refrigerated | Up to 48 hours (non-preserved) |
| Frozen | Not applicable |