creatinine
クレアチニン
解説 Definition
creatinine は、筋肉の代謝でできる老廃物で、血液検査や尿検査で腎臓の働きを見る指標として使われるクレアチニンのことです。日本語でも「クレアチニン」と言いますが、日常語ではなく医療・検査の文脈でよく使われます。
A waste product formed from normal creatine metabolism in muscles and removed from the blood mainly by the kidneys. Its concentration in blood or urine is commonly measured to help assess kidney function.
覚え方のコツ Memory Tip
creatinine は筋肉中の creatine「クレアチン」から生じる老廃物、とつなげて覚える。creatinine level「クレアチニン値」、serum creatinine「血清クレアチニン」が検査での定番表現。create とは綴りが似るだけで語源は別であり、数値から腎臓のろ過機能を評価する文脈に注目する。
Build the memory link from creatine to creatinine: creatinine is a waste product formed through the normal metabolism of creatine in muscle. Then connect it with the kidneys, which remove it from the blood. This gives the common medical phrases creatinine level, serum creatinine, and creatinine test. When a report mentions a high or normal creatinine result, it is usually helping clinicians assess kidney filtration. Although creatinine resembles create in spelling, the words are not etymologically related; the useful connection is creatine, muscle metabolism, and kidney testing.
例文
The doctor checked my creatinine level before changing the medicine.
医師は薬を変える前に、私のクレアチニン値を確認しました。
High creatinine may suggest that the kidneys are not working well.
クレアチニンが高い場合、腎臓がうまく働いていない可能性があります。
The lab report showed a normal creatinine result.
検査報告書では、クレアチニンの結果は正常でした。
creatinine の類義語・関連語
派生語
紛らわしい語
creatinine の語源・成り立ち Etymology
ギリシャ語 kreas(肉)に由来する creatine(クレアチン)から派生。筋肉中のクレアチンが代謝されてできる老廃物で、接尾辞 -inine は化学物質を示す。関連語: creatine(クレアチン)、create は同根ではなく別語源。肉=筋肉の代謝産物という意味。
Creatinine was named from creatine, the related substance found largely in muscle, with a chemical name-forming ending. Creatine ultimately derives from Greek kreas, meaning “meat” or “flesh,” reflecting its association with muscle tissue. The modern term identifies the cyclic waste product produced through creatine metabolism. Despite the similar spelling, creatinine and the English verb create do not share this origin.
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