 The Korean working group on sarcopenia, KWGS, has developed clinical practice guidelines for the diagnosis of sarcopenia in older Korean adults. These guidelines simplify the diagnostic process by combining the steps of case finding and assessment. The short physical performance battery test was given particular emphasis due to its multifaceted nature. Additionally, comprehensive geriatric assessment is important for diagnosing sarcopenia. The KWGS's clinical guideline aims to facilitate the early detection of sarcopenia by allowing various screening tools to be used in a unified process and reducing confusion about which tools to use for diagnosis. This article was authored by G.N. Beck, Heewon Young, Ken Min Kim, and others.