Test Code MMLRG Antimicrobial Susceptibility, Acid-Fast Bacilli, Rapidly Growing, Varies

Reporting Name
Susceptibility, AFB, Rapid GrowerUseful For
Determination of resistance of rapidly growing mycobacteria to antimicrobial agents
Performing Laboratory

Specimen Type
VariesAdditional Testing Requirements
Shipping Instructions
1. See Infectious Specimen Shipping Guidelines in Special Instructions.
2. Place specimen in a large infectious container (T146) and label as an etiologic agent/infectious substance.
Necessary Information
Specimen source and suspected organism identification are required.
Specimen Required
Specimen Type: Organism
Supplies: Infectious Container, Large (T146)
Container/Tube: Middlebrook 7H10 agar slant or other appropriate media
Specimen Volume: Pure isolate
Collection Instructions: Organism must be in pure culture, actively growing.
Specimen Minimum Volume
NA
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Varies | Ambient (preferred) | ||
Refrigerated |
Special Instructions
Reference Values
|
Susceptible (mcg/mL) |
Intermediate (mcg/mL) |
Resistant (mcg/mL) |
Amikacin |
≤16 |
32 |
≥64 |
Cefoxitin |
≤16 |
32-64 |
≥128 |
Ciprofloxacin |
≤1.0 |
2.0 |
≥4.0 |
Clarithromycin |
≤2.0 |
4.0 |
≥8.0 |
Doxycycline |
≤1.0 |
2.0-8.0 |
≥16 |
Imipenem |
≤4.0 |
8.0 |
≥16 |
Tobramycin |
≤2.0 |
4.0 |
≥8 |
Linezolid |
≤8.0 |
16 |
≥32 |
Trimethoprim/Sulfamethoxazole |
≤2/38 |
- |
≥4/76 |
Moxifloxacin |
≤1.0 |
2 |
≥4.0 |
Tigecycline |
No interpretations available |
Day(s) and Time(s) Performed
Varies
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.CPT Code Information
87186
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
MMLRG | Susceptibility, AFB, Rapid Grower | 29579-0 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
MMLRG | Susceptibility, AFB, Rapid Grower | 29579-0 |
Additional Tests
Test ID | Reporting Name | Available Separately | Always Performed |
---|---|---|---|
SRG | Susceptibility Rapid Grower | No, (Bill Only) | Yes |
Testing Algorithm
When this test is ordered, Susceptibility Rapid Grower will be performed and charged.
Reject Due To
Other | Agar plate |
Method Name
Minimum Inhibitory Concentration (MIC) by Microtiter Broth Dilution Method
Forms
If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.