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Urinalysis, Complete

Test Codes

EPIC: LAB7089, Beaker: UAC

Department

Urinalysis

Instructions

Urinalysis specimens must be sent to the Laboratory for processing within 2 hours (room temperature) or 8 hours (refrigerated) to minimize loss of cell casts and other formed elements.

Specimen Collection Criteria

Collect: A random, clean-catch, midstream urine specimen in a sterile collection container. (Minimum: 5.0 mL)

• A fairly concentrated (first morning void) specimen is preferred.
• Optimum specimen volume is at least 20 mL.
• Document the time of specimen collection.
• Transfer urine to a Yellow-top urine tube using the BD Integrate Transfer Collection Set or BD Vacutainer^® Urine Transfer Straw Kit with UA Tube. Specimens received in a sterile, screw-capped container will be accepted, but are not preferred. For more information, please refer to the Specimen Collection Manual.
• A separate, preserved specimen is required for Microbiology Culture and Sensitivity.

Physician Office/Draw Specimen Preparation

Maintain specimen refrigerated (2-8°C or 36-46°F) and transport to the Laboratory within 8 hours of collection.

Preparation for Courier Transport

Transport: Urine specimen, refrigerated (2-8 °C or 36-46 °F). (Minimum: 5.0 mL)

Rejection Criteria

• Urine volume less than 1.0 mL.
• Samples greater than 24 hours old.
• Samples that have been frozen.
• If samples are determined to have exceeded the stability guidelines provided, test results may be released with the following comment: "Sample greater than 4 hours old – may be loss of cell casts and other formed elements. Dipstick testing may yield inaccurate results."
• Specimens not collected and processed as indicated.

In-Lab Processing

Document the time of specimen collection in the computer system. Deliver the specimen immediately to the appropriate testing station.

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 2 hours
Refrigerated (2-8°C or 36-46°F): 8 hours (Specimens greater than 8 hours may be reported with a disclaimer).
Frozen (-20°C/-4°F or below): Unacceptable

Specimen Storage in Department Prior to Disposal:

Refrigerated (2-8°C or 36-46°F): 7 days

Laboratory

Canton Laboratory
Dearborn Hematology Laboratory
Farmington Hills Hematology/Urinalysis Laboratory
Grosse Pointe Hematology/Urinalysis Laboratory
Lenox Main Laboratory
Livonia Main Laboratory
Royal Oak Urinalysis Laboratory
Taylor Chemistry Laboratory
Trenton Hematology/Coagulation Laboratory
Troy Hematology/Urinalysis Laboratory
Wayne Chemistry Laboratory

Performed

Sunday – Saturday, 24 hours a day. 
STAT results available within 1 hour of receipt in the Laboratory.
Routine results available within 4 hours.

Reference Range

Specific Gravity	1.005-1.030
Nitrite	Negative
pH	5.0-8.0
Protein	Negative
Glucose	Negative
Ketones	Negative
Urobilinogen	less than 2.0
Bilirubin	Negative
Blood	Negative
Leukocyte Esterase	Negative

 

Microscopic examination of sediment:
WBC	0-5 (Negative)/hpf
RBC	0-2 (Negative)/hpf
Hyaline Casts	0-2 (Negative)/lpf

 

Confirmatory Tests (if dipstick is positive as warranted):
Qualitative Protein	Negative

 

Test Methodology

Automated Urinalysis Dipstick Reader, Flow Cytometry, Lamination with AutoParticle Recognition Software applications, Phase Microscopy or Brightfield Microscopy.

Interpretation

Routine urinalysis includes a report of specimen color, clarity, specific gravity and chemical dipstick testing. A microscopic examination of urinary sediment is routinely performed with the complete urinalysis.

Clinical Utility

Examination of the urine can provide:

1. information for diagnosis and management of renal or urinary tract disease.
2. aid in the detection of metabolic or systemic diseases not directly related to the kidney.

CPT Codes

81001 (with microscopic).

Contacts

Last Updated

8/16/2024