The use of the SI in reporting results in chemical pathology--our experience.

: Since 1 April 1974 some units of the SI have been introduced in the reporting of results from this laboratory. A change from the conventional way of expressing results to the new system requires careful planning and reorganisation. Our laboratory is the first in this country to make the change and our approach and experiences up to the present, are recorded. Special attention was given to reorganisation of the laboratory, to information supplied to the clinical staff, and to the procedure to be adopted on the day of the change. The impact on the clinical staff is assessed and some possible problems are discussed.