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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Urinalysis with Microscopy

Test Code(s): UA

CPT Code(s): 81001

Methodology: Automated Urine Chemistry and Microscopy Analyzer

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour.
Routine: 4 hours.


Specimen Requirements

Specimen: Urine

Collection Instructions: First morning void preferred. Refrigerate if transportation to lab is delayed.  Indicate whether specimen is midstream, indwelling catheter, single catheter or other method of collection. For midstream urine collection instructions refer to Health Facts for you - Male HF #4247, Female HF # 4236 located on UConnect.

Collection Container: Preferred: Sterile screw cap container

Collection Volume: Preferred: 10 mL
Pediatrics: 3 mL

Sample Analyzed: Urine aliquot

Volume Required: Preferred: 10 mL
Pediatrics: 3 mL

Specimen Transport: Transport specimen to the laboratory immediately. Transport with coolant pack if coming from outreach location.  

Unacceptable Criteria: Samples held at room temperature for more than 2 hours or samples refrigerated for more than 24 hours are not acceptable.

Stability: Ambient: 2 hours
Refrigerated: 24 hours
Frozen: Not acceptable


Interpretation

Reference Interval:

Age 0 days and up:

 

Dipstick:

 Specific Gravity  1.005-1.035
 pH  5.0-8.0
 Protein  Negative
 Glucose  Negative
 Ketones  Negative
 Hemoglobin  Negative
 Bilirubin*  Negative     
 Leukocyte Esterase  Negative
 Nitrite  Negative
 Urobilinogen  0.2, 1.0, <2.0 mg/dL

 

Microscopic Findings:

WBC 0-5/hpf
RBC 0-2/hpf
Bacteria Not seen

Squamous Epithelial cells    

0-2/hpf

Renal Epithelial cells

Not seen or less than 1/hpf
Crystals

Few calcium oxalate, few amorphous urates or phosphates

Casts 0-4 hyaline casts/lpf

Critical Calls: View

Additional Information:

Conversion and Sensitivity Chart Link

 

*All positive reagent strip bilirubin results are confirmed by Ictotest.

 

If Ictotest is not available, positive results will include the comment "Screen for bilirubin cannot be confirmed as positive due to reagent shortages. Most positive screens are not confirmed as positive."

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