Each method used in the laboratory should be written into an SOP with additional information on interpretation of the results obtained and any special precautions necessary for handling the reagents or chemicals made available.

Written instructions on how to deal with breakage or spillage involving specimens should be clearly available and a suitable laboratory disinfection procedure followed.

Apparatus used in the laboratory should have clear written instructions for proper use and maintenance.

Instructions for disinfection and disposal of clinical specimens by incineration should be available.

A procedure for disposing of needles and other ‘sharps’ into a suitable impervious pot, with appropriate provision for incineration, should be in place.