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Test Code UAC Urinalysis Chemistry Screen and Microscopic with Culture Reflex

Important Note

For information on urine culture, refer to test code URC

Specimen and Container/Tube

Specimen Type: Urine

Preferred Specimen: yellow top 10 mL conical tube and grey top urine culture tube 

Other Acceptable specimens: sterile container, urine cup

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 2 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.
  • 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

WBC

All

Male and female

Occasional, <5/HPF

RBC

All

Male and female

Occasional, <3/HPF

Squamous epithelial

All

Male and female

Moderate

Hyaline cast

All

Male and female

Occasional/HPF

Crystals

All

Male and female

Present of the following crystals is within normal limit. Amorphous urates, uric acid, ammonium urate, calcium carbonate, calcium oxalate, amorphous phosphates, triple or calcium phosphates

Critical Values

Not applicable 

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

CPT Codes

81001 (bundled 81003 and 81015)

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, WBCU 5821-4, RBCU 32776-7, SQUAM 11277-1, HYAL 5796-8, BACTE 5769-5

Volume

Preferred Volume:  yellow top10.0 mL, grey top 4 mL

Minimum Volume: 3.0 mL

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. Clean void and clean catch specimen required. Early morning specimen is best. 

Yellow and grey top tubes must be received by the laboratory.  

Test Components

Color, clarity, specific gravity, pH, leukocyte esterase, nitrites, protein, blood, glucose, ketones, bilirubin, urobilinogen, WBC, RBC, squamous epithelial cells, bacteria, additional urine microscopic findings such as cast and crystals reported when present 

Clinical Indications

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

Methodology

Beckman Coulter iRICELL, reagent strip chemistry, flow cell microscopic pattern recognition, light microscopy

For urine culture information refer to test URC

Synonyms/Search Keywords

UA, Urine macroscopic and microscopic, Urine with reflex to culture.

Additional Information

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

Urine culture reflex is based on findings from urinalysis. Positive leukocyte esterase or presence of >5 WBC will reflex urine culture.  

Last Reviewed Date

9/5/2024