Calcutta Serological Institute Laboratory Pvt. Ltd. is an Ultramodern Diagnostic Centre, fully air conditioned and computerised. The Central location of the Centre makes it more convenient for patients from all parts of the metropolis and also from suburbs of Kolkata. The caring and friendly attitude of the staff is a unique feature of this organisation. The polyclinic division of this institute covers all specialities of Medicine. This institute was founded by Late P. N. Mazumder, a visionary philanthropist and entrepreneur.