IMMUNO-MYCOLOGICS, INC.

  Exo-Antigen Identification Systems | Fungal Complement Fixation Reagents | Isolation and Culture Media

Yeast Extract Phosphate

Yeast Extract Phosphate (YXP) Medium (syn. Smith's Medium) has been shown to be superior to other media for the primary isolation of systemic fungi from contaminated specimens (i.e. sputum, bronchial washings, ulcer scrapings, tissue homogenates, etc.). The recovery rate for Histoplasma on YXP was between 85-95% and SabHi, the next highest with a recovery rate of 50-70% from sputum. YXP is a selective for the following organisms: Histoplasma capsulatum, H. duboisii, Blastomyces dermatitidis, Coccidioides immitis, Sporothrix schenckii, Cryptococcus neoformas, and Paracoccidioides brasiliensis.

YXP is not satisfactory for the routine cultivation of organisms such as: Candida sp., Aspergillus sp., or Penicillium sp.; in fact, the medium is inhibitory for these organisms.

YXP Systemic Fungal Medium Kit Complements

Rabbit Plasma Fibrinogen Supplement

Rabbit Plasma Fibrinogen (RPF) Supplement is an additive used in Baird-Parker medium to allow the identification, primary isolation, and quantitation of coagulase positive Staphylococcus aureus in direct culture. RPF allows S. aureus to be cultured from diverse sources such as clinical materials, environmental samples, and food. The identity of the organism can be confirmed on the primary plate. Using other methods, presumptive colonies of S. aureus are confirmed by the 3 hour coagulase test. However, solid media with RPF added allows confirmation on the plate.