Get the stories that matter to you sent straight to your inbox with our personalised newsletter.NHS Lanarkshire have issued an urgent reminder about when to book a Covid-19 test following a sharp increase in requests.People should self-isolate and book a test ONLY if they have coronavirus symptoms or have been instructed to do so by test and protect.NHS Lanarkshire’s public health team issued their plea as a result of a sharp increase in testing requests recently.Gabe Docherty, NHS Lanarkshire’s director of public health, said: “As a result of a sharp rise in testing requests recently, we would like to take this time to remind the public of the when they should book a test.“Covid-19 tests should only be booked if you are symptomatic or if.