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Eosinophil Count, Sputum

Test Code


CPT Code(s)


Preferred Specimen(s)

2 air-dried sputum smears

Minimum Volume

1 air-dried sputum smear

Alternative Specimen(s)

Sputum submitted in a sterile cup

Transport Container

Slide in slide holder

Transport Temperature

Room temperature

Specimen Stability

Room temperature: Indefinitely
Refrigerated: Not provided
Frozen: Not provided

Reject Criteria

Poor smear quality


Microscopic Examination/Wright's Stain

Performing Laboratory

Quest Diagnostics - California Region

Setup Schedule

Set up: Mon, Wed, Thurs, Sat 1st shift (cutoff 9 a.m.); Report available: 3 days

Reference Range(s)

No normals established

Clinical Significance

Screening test to aid in diagnosis of asthma, bronchitis and some types of pneumonia.

Alternative Name(s)

Sputum for Eosinophils

LOINC®' Code(s)

The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.

NOTE: The codes listed in the table below are not orderable Test Codes.

Result NameLOINC CodeComponent Name
30029100EOSINOPHIL COUNT, SPUTUM10327-5Eosinophils/100 leukocytes

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.