Name: Culture, Sputum, CF Patient
Test Name: Culture, Sputum, CF Patient
Health Link Test Code: HCCFC, HCCFCS
LIS Test Code: CFC, CFCS
CPT Code(s): 87070, 87205; Additional CPT codes may be added for processing, identification, and susceptibility testing.
Culture and Gram stain
Methodology: Culture, Microscopy
Individuals with cystic fibrosis experience recurrent lower respiratory tract infections for their entire lives. The infecting organisms change with the age of the patient, mixed infections are common, and the presence of Burkholderia cepacia group has an impact on prognosis and, perhaps, lung transplant eligibility. Special microbiological media are used to assure isolation of all significant pathogens. Exacerbations are treated with antibiotics and development of antimicrobial resistance is common. For all of these reasons, cultures and susceptibility testing are routinely performed quarterly on outpatients and on each admission to hospital.
Days Performed: Daily, 24 hours.
In-Lab Turnaround Time: Preliminary report: 1 day. Final report: 2 days minimum.
Specimen: Expectorated, suctioned or induced sputum, tracheal aspirate, cough throat swabs on pediatric patients
Collection Container: Sterile screw cap container
Also Acceptable: CultureSwab®
Transport specimen to the laboratory within 2 hours of collection.
More than one specimen received from the same patient within 24 hours is not acceptable.
Endogenous respiratory flora
Interpretation Type: Expected Results
Since expectorated sputum, tracheal aspirations, and most bronchial washings are contaminated with endogenous oropharyngeal flora (which includes most of the common lower respiratory tract pathogens), cultures of such specimens are neither particularly sensitive nor specific for the diagnosis of bacterial pneumonia and results should be interpreted with caution. Blood cultures are recommended for the diagnosis of pneumonia, especially for hospitalized patients and those with severe community acquired pneumonia (CAP).
Susceptibility testing is performed based on lab protocols.
Special methods are necessary for detection of mycobacteria, Legionella, filamentous and dimorphic fungi, Nocardia, and Mycoplasma. See individual entries for additional information.