Peptidase A stick is a strip test for the rapid identification of group A streptococci (Streptococcus pyogenes) and group D enterococci on the basis of enzymatic hydrolysis of L-pyrrolidonyl-ß-naphthylamide (PYR).

• Kit contains:
• 30 strips impregnated with a solution of L-pyrrolidonyl-ß-naphtyylamide (PYR)
• 1 bottle of PYR-Reagent (p-dimethyl-aminocinnamaldehyde)

Strips are impregnated with the substratum L-pyrrolidonyl-β-naphtylamide (PYR) that in presence of the enzyme pyrrolidonyl peptidase develops a pink-red colour when the PYR–reagent (p-dimethyl-aminocinnamaldehyde) is added.

Each batch of Peptidase A stick is subjected to quality control using the following microbial strains:
Streptococcus pyogenes ATCC® 19615 and Enterococcus faecalis ATCC® 29212 as positive control and Escherichia coli ATCC® 25922 and Staphylococcus aureus ATCC® 25923 as negative control.