Antimicrobial Susceptibility - D-Test (Macrolide, Lincosamide, Streptogramin Resistance)
Ordering Recommendation
Determine inducible resistance of staphylococci, Streptococcus pneumoniae, and beta-hemolytic streptococci to clindamycin.
Mnemonic
Methodology
Disk Diffusion
Performed
Sun-Sat
Reported
2-4 days
New York DOH Approval Status
Specimen Required
Actively growing Staphylococcus species, Streptococcus pneumoniae or beta-hemolytic Streptococcus species in pure culture.
Transport sealed container with pure culture on agar slant or in bacterial transport media. Place each specimen in an individually sealed bag.
Room temperature.
Mixed cultures or non-viable organisms.
Isolate identification and specimen source required.
Ambient: 1 week; Refrigerated: Unacceptable; Frozen: Unacceptable
Reference Interval
By report
Interpretive Data
D-Test Positive: This isolate is presumed to be resistant to clindamycin based on the detection of inducible clindamycin resistance.
D-Test Negative: This isolate does not demonstrate inducible clindamycin resistance in vitro.
Standard
Note
An additional processing fee will be billed for all organisms not submitted in pure culture, as indicated in the specimen requirements.
If species identification is not provided, identification will be performed at ARUP. Additional charges apply.
Hotline History
CPT Codes
87184
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0060059 | Susceptibility, D-Test | 42720-3 |
Aliases
- Antibiotic Susceptibility D Test
- Macrolide susceptibility, Lincosamide susceptibility, streptograminin susceptibility resistance