The department was started in January 2006 when it was curved from the giant department of chemical technology. Two courses, namely Diploma in Pharmacy and Diploma in Medical Laboratory Technology were being offered then. Since its inception the department has grown and metamorphosed in many ways. In medical laboratory technology the KNEC programme was dropped and the KMLTTB one adopted. This led to the change in name from Diploma in Medical Laboratory Technology (DMLT) to Diploma in Medical Laboratory Sciences (DMLS). Diploma in Pharmacy also changed to Diploma in Pharmaceutical Technology in line with the Pharmacy and Poisons Board (PPB) curriculum.
The changes included a great shift from the previous largely classroom based learning to practical oriented learning with many hours being dedicated to laboratory work and hospital attachment. Two new courses were introduced, Diploma in Medical Engineering which started in May 2010 with 5 students and has grown to the current population of 126 students. Certificate in Health Records and Information Technology started in 2009 and has grown to be one of the most popular courses. Currently, the department of health sciences has a student population of 610. Over the years the Department of Health Sciences has made itself distinct with many highly competent graduates serving in all parts of the country and even beyond. Its performance in the national examinations like KNEC, KMLTTB and PPB has also been exemplary and a big source of pride to the institution. The department looks forward to enlarging itself by introducing other medical courses.