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HelpTest Code CTBBL Mycobacterial Culture, Blood
Additional Codes
Outreach (Atlas) Order Code
C AFB B
Hospital (Cerner) Order Code
CTBBL
Reporting Name
Mycobacterial Culture, BUseful For
Diagnosing mycobacteremia
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Whole bloodShipping Instructions
Specimen must be processed within 7 days of collection.
Necessary Information
Specimen source is required.
Specimen Required
Container/Tube:
Preferred: Green top (sodium or lithium heparin)
Acceptable: SPS (sodium polyanethol sulfonate)
Specimen Volume: 8 to 10 mL per culture
Collection Instructions:
1. Send whole blood specimen in original tube.
2. SPS tubes are acceptable, but not preferred.
3. Note: SPS tubes must be clearly labeled as SPS. If label is obscured, sample may be canceled, as ACD (yellow top) is not an acceptable tube type.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole blood | Ambient (preferred) | 7 days |
| Refrigerated | 7 days |
Reference Values
Negative
If positive, mycobacteria are identified.
A final negative report will be issued after 42 days of incubation.
Day(s) Performed
Monday through Sunday
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
87116-Mycobacterial Culture
87118-Id MALDI-TOF Mass Spec AFB (if appropriate)
87150-Id, Mtb Speciation, PCR (if appropriate)
87150-Mycobacteria Probe Ident, Solid (if appropriate)
87153-Mtb PZA Confirmation, pcnA sequence (if appropriate)
87153-Mycobacteria Identification by Sequencing (if appropriate)
87150- Id, MTB complex Rapid PCR (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CTBBL | Mycobacterial Culture, B | 64412-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| CTBBL | Mycobacterial Culture, B | 64412-0 |
Report Available
42 daysReject Due To
| Blood Culture bottles (eg, BACTEC mycoF Lytic, VersaTrek) Isolator Clotted |
Reject |
Specimen Minimum Volume
5 mL
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| ISMY | ID by 16S Sequencing | No, (Bill Only) | No |
| RMALM | Id MALDI-TOF Mass Spec AFB | No, (Bill Only) | No |
| RTBSP | Id, Mtb Speciation, PCR | No, (Bill Only) | No |
| LCTB | Id, MTB complex Rapid PCR | No, (Bill Only) | No |
Testing Algorithm
When this test is ordered, the reflex tests may be performed at an additional charge.
Method Name
Continuously Monitored Automated Broth Culture Instrument with Conventional Methods for Identification of Mycobacteria
Forms
If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.