Urinalysis, Routine With Microscopic Examination on Positives
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
If protein, leukocyte, occult blood, and nitrites are all negative, no microscopic examination is performed - only the routine parameters are reported.
Limitations
Insufficient volume may limit the extent of procedures performed. Metabolites of Pyridium® may interfere with dipstick reactions by producing color interference. High vitamin C intake may cause an underestimate of glucosuria or a false-negative nitrite test. Survival of WBCs is decreased by low osmolality, alkalinity, and lack of refrigeration. Spermatozoa may be seen in male urine related to recent or retrograde ejaculation, but sperm is not reported in routine urinalysis exams.
Methodology
Automated Analyzer (Urinalysis)
Biomarkers
LOINC Codes
- 24357-6
- 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
- 5821-4
- 13945-1
- 5787-7
- 26052-1
- 24124-0
- 58436-7
- 5783-6
- 5782-8
- 8247-9
- 5769-5
- 5822-2
- 5813-1
- 11279-7
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
3-9 mL (Vacutainer® red/yellow urine transport tube) or 2 mL or greater (non-preserved urine)
Minimum Volume
3 mL (Vacutainer® red/yellow urine transport tube) or 2 mL (non-preserved urine)
Container
Vacutainer® red/yellow urine transport tube or urine bottle/urine transport tube (non-preserved)
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.
Causes for Rejection
Quantity not sufficient for analysis; improper labeling; tubes with boric acid or tartaric acid; Labcorp red-top C&S tube; Boricon, Bortiex, or Boricult yellow-top C&S tubes; urine transport tube with Triclosan; specimen received in Vacutainer® red/yellow urine transport tube more than 72 hours old; specimen received in urine cup stored at room temperature greater than 2 hours old; specimen received in urine cup refrigerated more than 48 hours old; frozen specimens; Vacutainer® red/yellow urine transport tube less than 3 mL or greater than 9 mL
Other tests from different labs that may be relevant