Original sentence: Formally before the NCA/ASCP (BOR) merger, Medical Laboratory Scientist certified by (ASCP) were entitled to use the credential "MT"(for Medical Technologist)   and if credentialed by the National Credentialing Agency for Laboratory Personnel (NCA), the credential "CLS" (Clinical Laboratory Scientist) was used
Edited sentence: Formally before the NCA/ASCP (BOR) merger, Medical Laboratory Scientist certified by (ASCP) were entitled to use the credential "MT" (for Medical Technologist)   and if credentialed by the National Credentialing Agency for Laboratory Personnel (NCA), the credential "CLS" (Clinical Laboratory Scientist) was used