acumedia* Casman Medium Base

• Intended Use: Casman Medium Base is used with blood for the isolation of Haemophilus influenzae, Neisseria gonorrhoeae and
other fastidious microorganisms.
• Product Summary: In 1947, Casman described an infusion-free medium enriched with 5% blood for fastidious microorganisms
incubated anaerobically. This medium replaced formulas containing fresh meat infusion and heated blood. Casman adjusted the
formula after experiments revealed nicotinamide disrupted the action of a blood enzyme that inactivates V factor (NAD). The
concentration of nicotinamide was lowered to support growth of Neisseria spp.
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