Test Directory

Urinalysis with Reflex to Microscopic Exam

Print this page

Updated Test Information:

Test Description
Urinalysis with Reflex to Microscopic Exam
Synonym(s)
UDIP, UA
Test ID
UAR
General Information
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
Specimen Type
Urine
Specimen Requirements
Urine Cup
Additional Processing Details
If analysis is unable to be performed within one hour of collection, store refrigerated up to 24 hours.
Stability
1 hour room temperature. 24 hours refrigerated.
Unacceptable Specimen Conditions
Quantity not sufficient; improper labeling; specimen received in inappropriate preservative; specimen received in urine cup stored at room temperature greater than 1 hour old; specimen received in urine cup refrigerated more than 24 hours old; frozen specimens
Limitations
Metabolites of Pyridium® may interfere with the dipstick reactions by producing color interference. High vitamin C intake may cause an underestimate of glucose, blood, bilirubin, and a false-negative nitrite test. A low ph can also result in a false negative for protein and WBC's. A false negative for WBC's also can occur with elevated specific gravity, glucose, and/or protein levels. An increased specific gravity may cause a false negative for blood and/or nitrites. False positives can occure for protein when hemoglobin is present and/or an elevated ph level.
Methodology
Automated
Estimated TAT
0-2 days
Testing Schedule
Monday-Saturday, & STAT
CPT Code(s)
81003
Additional Information
Includes; Specific Gravity
pH
Urine Color
Appearance
WBC Esterase
Protein
Glucose
Ketones
Blood
Bilirubin
Urobilinogen
Nitrite
Reflex Microscopic includes; WBC, RBC, epithelial cells, casts, crystals, mucus, bacteria, yeast, trichomonas, any other abnormality
Minimum Sample Volume
5 ml of urine
Pediatric Min. Volume (if applicable)
2 ml of urine
Reference Range
Specific Gravity                               1.005 - 1.030
pH 5.0 - 7.5
Urine Color Yellow
Appearance Clear
WBC Esterase Negative
Protein Negative
Glucose Normal
Ketones Negative
Blood Negative
Bilirubin Negative
Urobilinogen Normal
Nitrite Negative
Microscopic Exam:
WBC 0 - 5/hpf
RBC 0 - 2/hpf
Squamous Epithelial 0 - 10/hpf
Casts None Seen
Mucus None seen
Crystals with Identification None Seen
Bacteria None seen
Yeast None seen
WBC and RBC clumps None seen
Non-squamous Epithelial None seen
Renal Epithelial None seen
Transitional Epithelial None seen
Trichomonas Not Present
Reflex Conditions
Reflex to microscopic examination when any of the following are positive; leukocyte esterase, blood, protein, or nitrite.
Performing Lab
Incyte Diagnostics
LOINC Code(s)
24356-8