The government-approved oral fluid tests have faced scrutiny over their accuracy.
This is not the first test we have faced as an institution.
Do: If an inspector from the French anti-doping agency, known as the AFLD, appears at the door, welcome him warmly, even if it is the 24th unscheduled doping test you have faced in the first three months of your comeback after three years in retirement.
This will be the first major test Crystal Palace have faced at home this season, and having scored only 3 goals at Selhurst Park against West Ham, Burnley and Leicester so far this season, they may need another helping hand from Chelsea's defence.
This is the Nuggets' biggest challenge yet, and as with all of the tests they have faced, we will learn a great deal about what they are made of as they power onward.
However, Derby are the toughest test Forest have faced this season and they were restricted to just a couple of set-piece attempts on goal in the first half, both of which Andy Reid struck into the wall, and a Robert Tesche long-range shot that flew past the post.
Judicial nominees have faced "litmus tests" over abortion, and scrutiny over embryo storage, genetic testing, stem-cell research, and palliative care.
And Coinbase's missteps make it clear that the virtual currency industry is still young, with little of the battle testing that other financial markets have faced.
And although China has not blocked UN sanctions against North Korea over its nuclear testing, without China, North Korea would undoubtedly have faced much harsher sanctions; and they would have been more rigorously and actively enforced.
This book does the best job imaginable of putting you in the shoes of those who have faced that test, and by shining a light on this one aspect of our political life it succeeds in illuminating the whole.
