Antimicrobial Susceptibility - Anaerobe
Also known as: MA ANA
Use
The Antimicrobial Susceptibility - Anaerobe test is used to determine the in vitro susceptibility of anaerobic bacterial organisms to various antimicrobial agents. This test assists in guiding treatment decisions for serious infections involving anaerobic bacteria, especially in cases that involve critical sites such as blood, bone, joint, tissue, or brain abscesses. It helps clinicians tailor antibiotic therapy based on specific susceptibilities, thereby improving treatment outcomes and minimizing the use of broad-spectrum antibiotics.
Special Instructions
Anaerobic susceptibility testing is recommended for serious infections. Special instructions include ensuring the specimen is an actively growing organism in pure culture. If the species identification is not provided, ARUP will perform it, and additional charges will apply. Selective reporting by organism and source is available. An additional processing fee is billed for organisms not submitted in pure culture.
Limitations
The test employs broth microdilution methodology, which may not have CLSI guidelines for some anaerobes other than the Bacteroides fragilis group. Interpret results with caution as susceptibility is performed by non-standardized methodologies. The provided MIC values are interpretive and should be correlated clinically. The susceptibility determination is only valid for the submitted organism and conditions, and results may not be extrapolated to other organisms or conditions.
New York Approved
Methodology
Culture-based
Biomarkers
LOINC Codes
- 29576-6
Result Turnaround Time
5-8 days
Related Documents
For more information, please review the documents below
Specimen
Other
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
Transport sealed container with pure culture on agar slant in anaerobic transport pouch or on a swab in anaerobic transport media. Place each specimen in an individually sealed bag.
Patient Preparation
Actively growing organism in pure culture.
Causes for Rejection
Aerobic conditions, mixed cultures, or nonviable organisms.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 72 hours |
| Refrigerated | Unacceptable |
| Frozen | Unacceptable |