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Test Code C CF Resp CF Respiratory Culture - Quantitative

Biohazard Infectious

Clinical System Name

Sputum Culture, Quantitative


Cystic Fibrosis Quantitative Sputum Culture

CF Culture

CF BAL Culture

CF Bronchoalveolar Lavage Culture

CF Sinus Culture



Includes Quantitative Bacterial Culture. Specimen cultured for Aerobic bacteria. Samples that do not meet the minimum required volume (0.3 grams) are processed as Qualitative cultures. This culture is for Cystic Fibrosis patients only. For non-CF patients, see Sputum Culture.

Sample Requirements

Specimen: Sputum (preferred) or Throat Swab* (culturette swab or BBL EZ Double swab accepted)

Container: Sterile Container

Preferred Vol: 0.5 grams

Minimum Vol: 0.3 grams**


*Throat Swabs will be processed as Qualitative cultures. 

**Sputum sampels that are <0.3g will be processed as Qualitative cultures.

Processing Instructions


CPA: Send to Microbiology for processing. 


Off-site collection: CF Respiratory Cultures are not set up at Off-site Children's Lab locations. Refrigerate sample until courier pick-up. Sample must be refrigerated during transport. 


Other off-site locations, refrigerate sample during storage and transport to SCH Microbiology. Sample must be received into the microbiology laboratory within 48 hours of collection. 


Temp Time
Room temp 2 hours
Refrigerated 48 hours
Frozen N



Procedure Performed Turn Around Time (TAT)
Gram Stain N/A


Preliminary Day Shift 3 days
Culture 24/7 5 - 10 days


Gram Stains are not performed on CF Respiratory cultures.

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 (example: MIC's and ID codes)

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:

Reporting Information

Preliminary Report:  3 days

Final Report: 5 - 10 days