EOSU - Specimen: Eosinophils, Urine

Test Catalog

Test Name

Test ID: EOSU    
Eosinophils, Urine

Specimen Type Describes the specimen type validated for testing


Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Container/Tube: Unstained slide

Specimen Volume: 1 slide

Collection Instructions:

1. Collect a random urine specimen.

2. Spin 10 mL of a random urine collection in centrifuge.

3. Pour off supernatant. Assess urine sediment for presence of white blood cells (WBC). If no WBCs are seen, the eosinophil test can’t be performed. If WBCs are present, prepare slides using the spun sediment.

4. Unstained slide should be prepared within 2 hours of collection.

5. Centrifuge urine in cytospin centrifuge at speed of 750 rpm for 5 minutes.

6. Guidelines for slide preparation. Use the sediment to prepare slides as follows:

a. 150 mcL of sample for 1 to 3 WBC/high power field (hpf).

b. 100 mcL of sample for moderate to normal sediment (<50 cell/hpf).

c. 50 mcL of sample for heavier sediment (>50 cells/hpf).

d. 25 mcL for packed fields of sediment.

Additional Information:

1. Stained cytospin slides on Mayo Medical Laboratories patients are retained for 7 days.

2. Call Mayo Medical Laboratories at 800-533-1710 or 507-266-5700 with questions.

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected









Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperatures are also included.

Specimen TypeTemperatureTime
UrineRefrigerated (preferred)14 days
 Ambient 14 days
 Frozen 14 days