By combining MALDI-TOF mass spectrometry system and LC-MS/MS mass spectrometry system, MtoZ Biolabs provides professional and accurate protein identification services for protein spots, strips, and IP samples, as well as CO-IP sample proteins. The identifiable samples include: protein strips separated by 1D-SDS PAGE, protein spots in 2DE PAGE, protein expression products, and immunoprecipitation (Co-IP) samples.