Sample A: Sputum culture, grown on brain/heart infusion agar

following test performed:

gram staining: gram-positive cocci

catalase: negative

API: Streptococcus pneumoniae 60.1%, Aerococcus viridian2 21.9% and Streptococcus mitis1 8.0%.

suggest any alternative or further tests that may be performed to conclusively identify the organism in question