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The University of Chicago Medicine Laboratories

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Specimen Collection and Handling

Transfusion

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Mayo Clinic Laboratories

Test Code CHUA Urinalysis Chemistry Screen

Specimen and Container/Tube

Specimen Type: Urine

Preferred Specimen: yellow top 10 mL conical tube

Other Acceptable specimens: sterile container, urine cup

Specimen Stability

Storage Temperature

Stability

Room temperature

(20 - 25°C)

 2 hours 

Refrigerated

(2 - 10°C)

 24 hours 

Frozen

(-20°C)

not acceptable

Collection Instructions

Collect specimen per standard laboratory collection procedures. 

Specimen Handling and Transport Instructions

UCMC Onsite Instructions: Collect specimen per standard collection procedure and send to laboratory immediately.

UCMC Offsite and UC MedLab Outreach Instructions: Collect specimen per standard collection procedure and send to laboratory immediately. Specimens must be received within 8 hours. If transport is delayed, refrigerate specimens prior to transport. 

Rejection Criteria

  • Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits. 
  • Frozen or heated specimens will be rejected
  • Quantity not sufficient specimens are not suitable for testing and will be rejected 
  • Specimens collected with preservative will be rejected 
  • Grossly bloody or turbid specimens may not be suitable for testing

 

Reference Values

Analyte

Age

Sex

Reference Range

Specific gravity

All

Male and female

1.016 – 1.022

pH

All

Male and female

5 – 9

Leukocyte esterase

All

Male and female

Negative

Nitrites

All

Male and female

Negative

Protein

All

Male and female

Negative

Blood

All

Male and female

Negative

Glucose

All

Male and female

Negative

Ketones

All

Male and female

Negative

Bilirubin

All

Male and female

Negative

Urobilinogen

All

Male and female

0.1 – 1.0 mg/dL

 

Critical Values

Not applicable 

Clinical Indications

  • Assess the chemical constituents in the urine and the relationship to various diseases
  • Detect presence of microscopic elements in urine 

Test Components

Color, clarity, specific gravity, pH, leukocyte esterase, nitrites, protein, blood, glucose, ketones, bilirubin, urobilinogen. 

Methodology

Beckman Coulter iRICELL, reagent strip chemistry,

CPT Codes

81003 

LOINC Codes

COL 50553-7, CLARI 50552-9, SGU 50562-8, PHU 50560-2, CHLE 60026-2, CHNI 50558-6, PROU 50561-0, BLOU 57751-0, GLUU 53328-1, KETU 50557-8, BILU 50551-1, UROU 19161-9,

Additional Information

Please note residual urine samples run on the Beckman Coulter Iricell cannot be used for other add-on testing.

Turnaround Time

Turnaround times are relative to the time the specimen is received in the test laboratory. 

 

STAT Turnaround Time: 60 minutes

Routine Turnaround Time: 240 minutes

 

Testing Schedule: 24/7

Volume

Preferred Volume: 10.0 mL

Minimum Volume: 3.0 mL

Synonyms/Search Keywords

UA, Dipstick, Urine macroscopic

Last Reviewed Date

9/5/2024