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Test Code C Sinus Sinus Culture

Biohazard Infectious

Clinical System Name

Sinus Culture


Ethmoid Sinus

Maxillary Sinus

Sphenoid Sinus


Bacterial Culture and Gram Stain. Specimen cultured for Aerobic and Anaerobic bacteria.

Sample Requirements

Specimen: Drainage from sinus 

Container: Can be collected on a BD ESwab or into a Sterile Container (ex: syringe)

Preferred Vol: N/A

Minimum Vol: N/A

Processing Instructions

CPA: Send sample to Microbiology for processing. If the sample is shared and only one tube, syringe or other container is received, affix shared sample label and send entire sample plus requisition to Microbiology.


Off-site collection:  Sinus cultures are generally not set up at Off-site Children's Lab locations. If sample is sent in syringe, or other sterile container without transport media, it should be sent via Delivery Express to SCH Micro for timely culture set up. If sample is received on ESwab it can be sent via courier to SCH for culture set up. Swab should be held at Room Temp before and during transport.
ESwab samples that are received after the second to the last courier of the day should be sent to SCH Micro via Delivery Express to minimize delay in culture set up and reading. 


BD ESwab
Temp Time
Room temp 24 hours  
Refrigerated OK for <48 hours
Frozen N


Sample in Syringe / Sterile Container
Temp Time
Room temp 1 hour
Refrigerated N
Frozen N



Procedure Performed Turn Around Time (TAT)
Gram Stain 24/7 1 hour
Culture 24/7 48 - 72 hours

Cultures are read at appropriate intervals to detect early bacterial growth. STAT culture requests are not applicable.

Performing Laboratory

Seattle Children's Laboratory



Microbiology Laboratory

CPT Codes




This test is not limited to the CPT codes listed.  Others may be added as more testing is necessary and depending on the pathogens isolated (such as MIC's and ID's)

Reporting Information

Preliminary Report:  18 - 24 hours

Negative Final Report: 48 hours


When Moderate to Abundant Polys are seen on Gram Stain, culture incubation will be extended up to one week.


Notifiable Result

See Link below for Notifiable Conditions for WA state labs:


See Link below for PDF of phone numbers for Local Health jurisdictions (by County) in WA State: