Respiratory specimens, CSF, pleural fluid, or tissue.
Specimen Preparation
Unprocessed Specimens: Transport 5-10 mL respiratory specimen, CSF or pleural fluid (Min: 1 mL) in a sterile container, or tissue large enough to be ground. Label as unprocessed. Processed Specimens: Transport 2-5 mL digested/decontaminated respiratory specimen, CSF, pleural fluid, or tissue in a sterile container. (Min: 1 mL) Place each specimen in an individually sealed bag.
Specimen source required. Processed Specimens: Identify method used for digestion and provide smear results.
Notes
Body fluids other than pleural fluid will be run with a disclaimer.
Specimen source required. To perform this test, it is essential to know whether or not the submitted specimen has been processed (digestion and decontamination procedure). If processed, smear results must be provided as a comment on the test order or requisition. Delayed turnaround time will occur if the required information is not provided.
After a positive result, repeat orders for Mycobacterium tuberculosis Complex Detection and Rifampin Resistance by PCR will continue to yield a positive result and repeat testing is not clinically indicated.
The Xpert MTB/RIF test performance has not been evaluated with samples from pediatric patients.
Panel includes PCR testing to detect M. tuberculosis complex isolates and determine possible resistance to rifampin treatment. Test may be ordered for client-processed specimens. Refer to specimen requirements.
Performed
Sun-Sat
Methodology
Qualitative Polymerase Chain Reaction (PCR)
Reported
1-3 days
Synonyms
MC MTD
MC MTDCSF
MTB PCR
MTD PCR
ARUP Test Code
2010775
Interpretive Data
Mycobacterial culture is a more sensitive method than molecular testing for the diagnosis of tuberculosis and is still considered the gold standard. When possible, a culture must be performed regardless of the molecular method test result.
CPT Codes
87556; 87798
LOINC
31208-2
38379-4
89372-7
93479-4
ARUP Test Code
2010775
Performing Lab
ARUP Laboratories
Test Build Information
Order Code
Order Name
Result Code
Result Name
LOINC
CPT
MTBRIF
MTB DETECT & RIFAMPIN RESIST PCR
RIFSRC
MTBRIF SOURCE
31208-2
87556, 87798
MTBRIF
MTB DETECT & RIFAMPIN RESIST PCR
MTBPCR
MYCOBACTERIA TUBERCULOSIS
13956-8
MTBRIF
MTB DETECT & RIFAMPIN RESIST PCR
RIFPCR
MTB RIFAMPIN PCR
46244-0
MTBRIF
MTB DETECT & RIFAMPIN RESIST PCR
MTBINT
MTB COMPLEX INTERP
48767-8
AOE Information (Ask at Order Entry Questions)
AOE
Result Code
Result Name
LOINC
RIFSRC
MTBRIF SOURCE
31208-2
Collection
Collect
Respiratory specimens, CSF, pleural fluid, or tissue.
Specimen Preparation
Unprocessed Specimens: Transport 5-10 mL respiratory specimen, CSF or pleural fluid (Min: 1 mL) in a sterile container, or tissue large enough to be ground. Label as unprocessed. Processed Specimens: Transport 2-5 mL digested/decontaminated respiratory specimen, CSF, pleural fluid, or tissue in a sterile container. (Min: 1 mL) Place each specimen in an individually sealed bag.
Specimen source required. Processed Specimens: Identify method used for digestion and provide smear results.
Notes
Body fluids other than pleural fluid will be run with a disclaimer.
Specimen source required. To perform this test, it is essential to know whether or not the submitted specimen has been processed (digestion and decontamination procedure). If processed, smear results must be provided as a comment on the test order or requisition. Delayed turnaround time will occur if the required information is not provided.
After a positive result, repeat orders for Mycobacterium tuberculosis Complex Detection and Rifampin Resistance by PCR will continue to yield a positive result and repeat testing is not clinically indicated.
The Xpert MTB/RIF test performance has not been evaluated with samples from pediatric patients.
Panel includes PCR testing to detect M. tuberculosis complex isolates and determine possible resistance to rifampin treatment. Test may be ordered for client-processed specimens. Refer to specimen requirements.
Performed
Sun-Sat
Methodology
Qualitative Polymerase Chain Reaction (PCR)
Reported
1-3 days
Synonyms
MC MTD
MC MTDCSF
MTB PCR
MTD PCR
ARUP Test Code
2010775
Result Interpretation
Interpretive Data
Mycobacterial culture is a more sensitive method than molecular testing for the diagnosis of tuberculosis and is still considered the gold standard. When possible, a culture must be performed regardless of the molecular method test result.
Laboratories.