検査

1. Origins, structure, and basic meaning

• Structure: It is read けんさ. 検 contributes checking and 査 examination, forming a word for assessing a condition or checking for problems against a standard.
• Basic usage: It is used for medical tests and checks of product quality. In the example, the speaker has a blood test at a hospital.
  • 病院で血液検査を受けた。

2. Common pitfalls and similar expressions

• Performing a test versus undergoing it
  • 検査する describes performing an examination, whereas 検査を受ける describes undergoing one.