Table 1.

Aliquot storage conditions

Aliquot	Storage method	Description
1	Fresh	Baseline sample—analysed at time 0
2	Bench	Analysed after being left in the light at room temperature for four hours
3	Fridge	Analysed immediately after being refrigerated for four hours
4	Bench & fridge	Analysed after being left in the light at room temperature for one hour and then refrigerated for four hours
5	Postal	Analysed after handling to mimic first class postage—parcelled, left in a vehicle overnight and examined after 24 h