Respiratory TB PCR
General Information
Lab Name
Respiratory TB PCR
Lab Code
MTBP
Epic Name
Respiratory TB PCR
Description
This test must be ordered with an AFB culture with stain (AFBHSC). Exception: outside locations that perform AFB culture may submit sediments of specimens concentrated for AFB culture for testing. This test is reflexively ordered on the first sputum for AFB culture on HMC and UW-MT patients, except cystic fibrosis patients who have the test performed by request only. Additional tests can be ordered by request as long as the patient has not been on anti-TB medications for longer than 3 days. Reflexive testing is repeated every 28 days on TB negative patients. See also TBCPCR for TB PCR performed at UW-MT Microbiology. For request on FLUIDS or TISSUE see TBCPCR. Specimen deadlines for same day results are 7 AM @UW-MT and 9 AM @HMC. This test detects M. tuberculosis complex DNA. Specimens are concentrated and cultured (see AFBHSC).
Synonyms
AFB-Amplified, AMTD, Cepheid, GeneXpert, MTD, M. Tuberculosis, Mycobacteria, PCR-TB, Xpert
Components
| Code | Name |
|---|---|
| SDES | Specimen Description |
| SREQ | Special Requests |
| MTBPR | MTBC PCR Result |
| RPT | Report Status |
Interpretation
Method
Nucleic Acid Amplification(Cepheid GeneXpert)
Reference Range
See individual components
Guidelines
Ordering & Collection
Specimen Type
Collection
Deep cough or induced sputum specimens, bronchoalveolar lavage, or bronchial washings
Handling Instructions
Specimen must be refrigerated within 30 minutes and received within 5 days of collection.
Quantity
requested: 5-10 mL Sputum, BAL, or Bronchial Washings, or 1 mL sediment from specimen concentrated for AFB culture
minimum: 2 mL (suboptimal) Sputum, BAL, or Bronchial Washings, or 1 mL sediment from specimen concentrated for AFB culture
Processing
Specimens are stored refrigerated until concentrated.
Performance
LIS Dept Code
Microbiology (MC)
Performing Location(s)
| HMC |
Microbiology
206-744-5858 325 9th Ave, Rm # GWH-47, Seattle, WA 98104-2420 |
|---|
Frequency
Daily
Available STAT?
No