An example of why it is important to think about how you test a client, parent or potential carer - what method do we use, what period shall we cover, what substances to test for, should the testing be repeated - and if so, using the same method or another?
n some cases, using both hair and oral fluid testing in tandem is the right approach. In a family court setting, you may organise the occasional hair test to find out the history and setting, or alternatively, an oral fluid test to get a picture of what’s current. Sometimes, social services choose to perform regular, repeated oral fluid tests believing it will be cheaper - however, a hair test is more efficient and economical. While a hair test will track historic use or abstinence, a single oral fluid test can be used to complement the hair test, checking the few hours or days prior to testing that the hair test will not cover.