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The University of Chicago Medicine Laboratories

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Specimen Collection and Handling

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Mayo Clinic Laboratories

Test Code UEOS Urine Eosinophil

Specimen and Container/Tube

Specimen Type: Urine

Preferred Specimen: yellow top 10 mL conical tube

Other Acceptable specimens: sterile container, urine cup

Volume

Preferred Volume: 10.0 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. 

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
Urine Eosinophil All Male and Female Not Present 

 

Critical Values

Not applicable 

Clinical Indications

  • Detect the presence of eosinophils in urine
  • May be important in renal allograft recipients when acute rejection is suspected, in patients with allergic nephritis, or patients with other diseases, probably most importantly being drug-induced acute interstitial nephritis.
  • Other diseases which have been found to be associated with eosinophiluria include rapidly progressive glomerulonephritis, acute prostatitis, postinfectious glomerulonephritis, acute cystitis and schistosomiasis. 

Test Components

Urine eosinophil 

Methodology

Wright stain and light microscopy 

CPT Codes

89050

LOINC Codes

UEOS 12210-1

Additional Information

Not applicable 

Turnaround Time

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

 

STAT Turnaround Time: Not available STAT

Routine Turnaround Time: 24 hours

 

Testing Schedule: 24/7

Synonyms/Search Keywords

Urine eos, percentage of eosinophils 

Last Reviewed Date

9/5/2024