A newborn presented with a skin “wound” (lesion) that grew p…

A newborn presented with a skin “wound” (lesion) that grew predominantly beta hemolytic colonies of 5% sheep blood agar. The gram stain revealed gram positive cocci. The newborn was covered with tiny “blister like” eruptions that resembled a burn. The isolate was catalase positive. Which tests might the MLS conduct to confirm their suspicion?