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HelpTest Code CFRC Bacterial Culture, Cystic Fibrosis, Respiratory
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Bacterial Culture, Cystic FibrosisSpecimen Type
VariesOrdering Guidance
If susceptibilities are also desired, order CFRCS / Bacterial Culture, Cystic Fibrosis with Antimicrobial Susceptibilities, Varies.
Shipping Instructions
Specimen must arrive within 48 hours of collection.
Necessary Information
Specimen source is required.
Specimen Required
Submit only 1 of the following specimens:
Preferred:
Specimen Type: Sputum, expectorated or induced
Patient Preparation: Have the patient brush their teeth or gargle with water immediately prior to specimen collection. This reduces the number of contaminating oropharyngeal bacteria.
Container/Tube: Sterile container
Specimen Volume: Entire collection
Acceptable:
Specimen Type: Bronchial aspirate or washing, sinus aspirate, bronchoalveolar lavage, endotracheal, or tracheal
Container/Tube: Sterile container
Specimen Volume: Entire collection
Specimen Type: Throat swab
Supplies:
-Culturette (BBL Culture Swab) (T092)
-BD E-Swab (T853)
Container/Tube: Culture transport swab (Dacron or rayon swab with aluminum or plastic shaft with either Stuart or Amies liquid medium), or ESwab
Reject Due To
| Dry swab | Reject |
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Varies | Refrigerated | 48 hours |
Specimen Minimum Volume
See Specimen Required
Day(s) Performed
Monday through Sunday
Specimen Retention Time
1 dayReport Available
5 to 12 daysReference Values
No growth or usual microbiota
Identification of probable pathogens
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| COMM | Identification Commercial Kit | No, (Bill Only) | No |
| RMALD | Ident by MALDI-TOF mass spec | No, (Bill Only) | No |
| GID | Bacteria Identification | No, (Bill Only) | No |
| ISAE | Aerobe Ident by Sequencing | No, (Bill Only) | No |
| REFID | Additional Identification Procedure | No, (Bill Only) | No |
| SALS | Serologic Agglut Method 1 Ident | No, (Bill Only) | No |
| EC | Serologic Agglut Method 2 Ident | No, (Bill Only) | No |
| SHIG | Serologic Agglut Method 3 Ident | No, (Bill Only) | No |
| STAP | Identification Staphylococcus | No, (Bill Only) | No |
| STRP | Identification Streptococcus | No, (Bill Only) | No |
| SIDC | Ident Serologic Agglut Method 4 | No, (Bill Only) | No |
| PCRID | Identification by PCR | No, (Bill Only) | No |
Useful For
Detecting disease-causing aerobic bacteria in specimens from patients with cystic fibrosis
Testing Algorithm
When this test is ordered, the reflex tests may be performed at an additional charge.
CPT Code Information
87070-Bacteria, culture, cystic fibrosis, respiratory
87077-Identification commercial kit (if appropriate)
87077-Ident by MALDI-TOF mass spec (if appropriate)
87077-Bacteria Identification (if appropriate)
87077-Additional Identification procedure (if appropriate)
87077-Identification Staphylococcus (if appropriate)
87077-Identification Streptococcus (if appropriate)
87147 x 1-3-Serologic agglut method 1 ident (if appropriate)
87147-Serologic agglut method 2 ident (if appropriate)
87147 x 4-Serologic agglut method 3 ident (if appropriate)
87147 x 2-6-Serologic Agglut Method 4 Ident (if appropriate)
87153-Aerobe Ident by sequencing (if appropriate)
87150-Identification by PCR (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CFRC | Bacterial Culture, Cystic Fibrosis | 44798-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| CFRC | Bacterial Culture, Cystic Fibrosis | 44798-7 |
Method Description
Standard media (5% sheep blood, chocolate, and eosin methylene blue agar plates) used for respiratory cultures are inoculated. In addition, 2 selective agar plates are utilized to enable isolation of slower-growing pathogens that may be easily overgrown by usual microbiota and the longstanding colonization by Pseudomonas aeruginosa. Burkholderia cepacia Selective Agar plate is used for the isolation of Burkholderia cepacia complex, which includes 9 distinct species. Isolates of Burkholderia cepacia will be sent to the University of Michigan's Cystic Fibrosis Foundation Research Testing and Repository for genotyping. There is no additional charge for this shipping/testing. A chromogenic Staphylococcus aureus agar is used to enhance the isolation of Staphylococcus aureus. Finally, a second chocolate blood agar plate is incubated in an anaerobic atmosphere. The anaerobic atmosphere allows for the detection of Haemophilus species that may otherwise be overgrown by Pseudomonas aeruginosa. Pathogens or possible pathogens are identified using one or a combination of the following techniques: commercial identification strips or panels, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), conventional biochemical tests, carbon source utilization, real-time polymerase chain reaction, and nucleic acid sequencing of the 16S ribosomal RNA gene.(Gilligan P, Alby K, York MK. Respiratory cultures from cystic fibrosis patients. In: Leber AL, eds. Clinical Microbiology Procedures Handbook. Vol 1. 4th ed. ASM Press; 2016:section 3.11.3)