This guideline is intended to help clinical laboratories perform high quality valid assays for basic procoagulants and anticoagulants as part of a routine diagnostic service. Areas that overlap with or have been included in other BSH (https://bsh.org.uk/guidelines/) or United Kingdom Haemophilia Centre Doctors Organisation (UKHCDO) (http://www.ukhcdo.org/guidelines/) guidelines have been omitted, including guidance on: heparin‐induced thrombocytopaenia (HIT); lupus anticoagulant (LA) testing; D‐dimer assays; platelet function testing; diagnosis of von Willebrand disease (VWD); measurement of factor replacement in haemophilia A and B; monitoring of anticoagulants [vitamin K antagonists (VKA) and direct oral anticoagulants (DOAC)]; and global assays of haemostasis (e.g. TEG, ROTEM, thrombin generation).

Dr Peter Baker Audio Commentary

Declaration of Interests

The BSH paid the expenses incurred during the writing of this guidance. None of the authors had conflicts of interest to declare. All authors have made a declaration of interests to the BSH and Task Force Chairs which may be viewed on request.