Mycobacterium avium complex (MAC) Susceptibility
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| WSLH Department: | CDD - Communicable Disease Division |
| WSLH Test Code: | MM00202 |
| Day(s) Performed: | Test is run weekly. |
| Turn-around Time: | 2-3 weeks |
| Recommended Uses: | Clarithromycin testing should be performed on isolates from blood or tissue (disseminated disease) and clinically significant respiratory specimens from patients who have failed prior macrolide therapy or prophylaxis. (MAC strains not previously exposed to macrolide therapy or prophylaxis are uniformly susceptible to the macrolides.) |
| Contraindications: | |
| Additional Tests Performed: |
| Patient Preparations: | |
| Specimen Requirements: | M. avium complex isolate in broth or solid media; pure culture is required for testing. |
| Specimen Handling & Transport: | Non-tuberculous mycobacterial isolates should be packaged and transported according to DOT and IATA guidelines outlined for "Category B Biological Substances". Cultures may be transported to the laboratory at ambient temperatures. Avoid temperature extremes during transport. |
| Collection Kit/Container: | |
| Collection Instructions: | |
| Unacceptable Conditions: | |
| Requisition Form: |
CDD Requisition Form A
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| Required Information: | Laboratory regulations require the following minimum information to be provided on the requisition form for a specimen to be accepted for testing: Patient name or unique identifier; date and time of collection, patient date of birth and sex, specimen type/site of collection, test request(s), clinician name and UPIN, and address for reporting results. Please be certain that name/identifier on the form matches that on the specimen label. |
| Results Include: | Numeric MIC result and interpretation as Susceptible, Intermediate or Resistant using criteria established by the Clinical and Laboratory Standards Institute (CLSI). |
| Limitations: | Mixed or contaminated cultures will take longer and results may not be available. |
| Additional Tests Recommended: | |
| Additional Comments: |
| Methodology: | Broth microdilution |
| Includes: | Clarithromycin Minimum Inhibitory Concentration (MIC) susceptibility testing |
| CPT Code: | 87186 |
| Price: | $166.00 Price Effective 1/1/25 |