Test Code Urinalysis Urinalysis
Test Method
Reagent Impregnated Strips; N-Multistix 10 SG, Siemens
Healthcare Diagnostic
Wet Prep Microscopy
Performance
Testing is performed Monday through Sunday.
Routine orders: Typically completed within 2 hours upon receipt in the laboratory.
STAT orders: Typically completed within 20 minutes upon receipt in the laboratory.
Specimen Requirement
10 mL of urine is required. First morning void is recommended.
Collect the first morning void into a clean specimen container with a tight fitting lid. Label the specimen appropriately with two identifiers, patient name and another identifier, (patient ID number, DOB, etc.) include date and time of collection. Protect the urine from strong light prior to transport. Transport urine collections to laboratory as soon as possible. Urine, protected from strong light, may be stored at room temperature for up to 2 hours. If a delay in transport may exceed 2 hours, refrigerate the specimen for up to 4 hours. Specimens not meeting the above storage criteria may be rejected.
Microscopic exam of urine sediment is performed under the following criteria:
- Positive for blood (Trace or greater)
- Protein ≥30 mg/dL
- Nitrite positive
- Leukocyte esterase positive (Trace or greater)
A Urine Culture is performed under the following criteria:
- WBC >10/HPF
Useful For
Screening for urinary tract diseases and some nonrenal diseases
Reference Values
Color: Yellow
Appearance: Clear
pH: 5.0-8.0
Specific Gravity:
Random Specimen: 1.005-1.030
24 Hour Specimen: 1.015-1.025
Protein: Negative
Glucose: Negative
Ketones: Negative
Bilirubin: Negative
Blood: Negative
Nitrite: Negative
Urobilinogen: LT2 (Less than 2.0 EU/dL)
Leukocyte Esterase: Negative
Microscopic Exam:
WBC: 0-10/HPF
RBC: 0-2/HPF
CPT Code Information
81001 Urine Tests: Urinalysis, by dip stick or tablet reagent for bilirubin, glucose, hemoglobin, ketones, leukocytes, nitrite, pH, protein, specific gravity, urobilinogen, any number of these constituents; automated with microscopy