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Thermo Scientific™ Oxoid™ Factor Test discs
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Specifications:
| Application | Antimicrobial Susceptibility and Resistance Testing (AST) |
| Storage Temperature | -20°C |
| Product Type | Antibiotic Disc |
| Product Brand | Thermo Fisher Scientific™, Oxoid |
| Product Grade | Microbiology grade |
Thermo Scientific™ Oxoid™ Factor Test Discs are high-quality chromogenic paper discs impregnated with growth factors essential for the identification and differentiation of Haemophilus species and other fastidious bacteria in clinical microbiology.
Used in disc diffusion factor testing, these discs help determine an organism’s dependency on X Factor (hemin), V Factor (nicotinamide adenine dinucleotide – NAD), or both (XV Factor) for growth. The test is commonly performed on enriched agar using a quad plate setup or satellite test method to aid presumptive identification.
Each disc is housed in a spring-loaded, shatterproof cartridge, ensuring sterile, accurate placement on the agar surface. Discs are foil-wrapped with desiccant for long-term integrity and optimal antimicrobial factor preservation.
Factor Types & Differentiation
| Product Code | Name | Factor Type | Use |
|---|---|---|---|
| DD0003B | Oxoid™ X Factor Discs | X Factor | Detects organisms requiring hemin (e.g., H. ducreyi) |
| DD0004B | Oxoid™ V Factor Discs | V Factor | Detects organisms requiring NAD (e.g., H. parainfluenzae) |
| DD0005B | Oxoid™ XV Factor Discs | X + V Factor | Detects organisms requiring both factors (e.g., H. influenzae) |
Key Features
- Designed for identification of Haemophilus spp. and other NAD/hemin-dependent bacteria
- Delivers clear differentiation based on X, V, and XV factor requirements
- Compatible with satellite test and quad plate methods
- Each disc type supports accurate, reliable growth interpretation
- Spring-loaded cartridge for easy handling and sterile dispensing
- Frozen storage (-10 °C to -20 °C) ensures stability and longevity
- For in vitro diagnostic use only
Applications
- Identification and differentiation of Haemophilus influenzae, H. parainfluenzae, H. ducreyi, and related organisms
- Use in respiratory and genital tract infection diagnostics
- Clinical microbiology workflows requiring precise fastidious organism identification
- Confirmatory testing alongside chocolate agar and other enriched media
Specifications
| Parameter | Details |
|---|---|
| Product Type | Antimicrobial Growth Factor Test Discs |
| Factor Types | X, V, XV |
| Disc Diameter | 6 mm |
| Packaging Format | 5 cartridges × 50 discs = 250 discs/pack |
| Storage Temperature | –10 °C to –20 °C |
| Intended Use | In vitro diagnostic |
Thermo Scientific™ Oxoid™ Factor Test Discs offer a trusted, efficient solution for identifying Haemophilus species and determining their growth factor requirements. With high-quality formulation, excellent stability, and compatibility with standard clinical microbiology methods, these discs are an essential tool in the detection and differentiation of fastidious organisms.
- Type: V Factor F Factor V + F Factor