Recognizes whole cells. Antiserum is not absorbed and may react with other related microorganisms. Cross -reacts with Group A Streptococcus, Group B Streptococcus, S. pneumoniae, Staph aureus, Clostridium perfringens and Bacillus subtilis.

Short-term (up to 6 months) store at 2-8 °C. Long term, aliquot and store at -20°C. Avoid multiple freeze/thaw cycles.