Positive MGIT for Identification
| Test Name: | Positive MGIT for Identification |
| Test Methodology: | Instrument positive samples will be confirmed by an acid-fast smear and identified using phenotypic and molecular testing methods (e.g., Matrix Assisted Laser Desorption Ionization-Time of Flight (MALDI-TOF) mass spectrometry). |
| Test to be Performed: | MGIT ID |
| CPT: | 87206 83789 Other CPT for identifying isolates |
| Reflex Testing Criteria: | If M. tuberculosis complex is isolated from a new patient, drug susceptibility testing will be performed, and an isolate will be sent for TB genotyping per Title 17. |
| Pre-Approval Required: | None |
| Accepted Specimens: | AFB positive MGIT broth tube (5 -7 mL recommended; 2 mL minimum) |
| Specimen Stability: | Room temperature: up to 4 weeks. Refrigerated (2 – 8°C): Not recommended. Frozen: Unacceptable. |
| Storage/Transport Conditions: | Ambient temperature. Ensure isolate is secured with parafilm or tape. Ship using appropriate DOT/IATA requirements. Suspected MTBC cultures should be shipped as Category A Infectious Substance. |
| Turnaround Time: | 3-4 weeks; preliminary reports will be issued if acid-fast bacilli are confirmed in instrument positive culture and following identification. |
| Reference Range: | Non-reactive |
| Comments: | For questions regarding submissions, please contact the lab for further information. |
Public Health Laboratory Location
150 East Holt Boulevard
Ontario, CA 91761
Phone: (909) 458-9430
Fax: (909) 986-3590
Monday – Friday: 8 a.m. to 5 p.m.