It depends on who and what is the purpose of measuring IQ.

If it's a Western Oriented organization like Mensa, there is a range of standardieze tests usually involving puzzles to test.

For the purposes of clinical psychology, there are specialized IQ tests which require a 1-to-1 session with the qualified clinical psychologist (administrator) and the testee to sit though the test. These test take into account various factors such as the cultural differences which may differ from the creator of the test and the testee,. Also taken into account are the native language of the testee which may be different to that of the language used in the test, and the softer attributes like fluid intelligence etc.