The meaning of “Residual sample” is the same as “Control / Reserve sample” .
This means the remaining sample (initially collected as “Control / Reserve sample”) after analysis should be stored properly for specified storage period.
Note:- Internationally, the principles of “Good Laboratory Practice” (GLP) define a set of rules and criteria for a Quality system concerned with the organisational process and the conditions under which non-clinical health (Animal based Toxicological studies) and environmental safety studies are planned, performed, monitored, recorded, reported and archived. Therefore, the term “GLP” is used with reference to (animal based) non-clinical toxicological studies of chemical substances including drugs.