In May 2017 and 2018, the ISH conducted a global blood pressure screening survey across over 100 countries, collecting data from over 2.7 million participants to raise awareness of the health issues surrounding raised blood pressure. Following the success of the campaign, in 2019, ISH proposes to conduct a third global cross-sectional blood pressure (BP) survey of volunteer adults (aged ≥ 18 years) who ideally have not had their BPs measured for at least a year before BP screening. The survey will be conducted in approximately 100 countries each incorporating a variable number of screening sites. Basic demographic and clinical information as well as BP measurements will be collected by health profession volunteers throughout May 2019. Sitting blood pressure will be measured in triplicate according to standardised specified methods. The data will be anonymised, coded and transferred electronically (through a purpose-designed application or using an Excel spreadsheet) to a central AWS DynamoDB database. Screenees whose BP readings are consistent with the current definition of hypertension will be provided with written dietary and lifestyle advice. They will also be provided with a referral to receive medications and/or follow up support, according to local facilities.