[How to utilize JSML2009 guideline of laboratory examination].

As a resident, I am rotating various departments. I am called for to acquire knowledge, skills, and attitudes for primary care. Although I mainly perform medical examinations and treatments of inpatients, I also have some opportunities to treat outpatients who come to an emergency room. There we see various patients, from whose medical background we know nothing, to who are coming to our hospital regularly for years and have huge medical records. We need to choose suitable examinations and to interpret examination results. In the process, I utilize JSML2009 guideline of laboratory examination. Through my cases, I describe how to utilize the guideline.