Laboratories should ensure the physical design can accommodate separate areas for patient derived samples and amplified material.
Possible cross contamination between these areas including by movement of equipment, staff, or aerosols should be assessed and managed.
Measures should be available to both detect cross contamination between clinical samples, and to eliminate it. Detection may include the use of processing blanks or environmental monitoring. Elimination may include the use of hypochlorite or other decontamination measures.
For further information refer to refer to NPAAC Requirements for the Medical Testing of Human Nucleic Acids.