Yes, "to have a check-up" and "to go for a check-up" generally have the same meaning. Both phrases refer to the act of undergoing a medical examination or assessment to evaluate one's overall health or to monitor a specific condition. The difference lies in the phrasing: "to have a check-up" suggests that the check-up is being received or obtained, while "to go for a check-up" implies the action of visiting a healthcare professional or facility to undergo the examination. Ultimately, the intent and outcome are the same.

Yes, both phrases essentially mean the same thing, which is to undergo a medical examination. However, there can be a slight difference in connotation based on the preposition used: "To have a check-up" is a more general phrase. It simply means that a person is undergoing a medical examination, but doesn't specify where the examination is taking place. For example, as mentioned by the teacher before me, a doctor could come to the person's home to conduct the check-up. "To go for a check-up" typically implies that a person is leaving their current location to visit a healthcare facility for a medical examination. This phrase might suggest the act of leaving home or work to visit a doctor's office, clinic, or hospital. In most contexts, these phrases can be used interchangeably, and the exact location of the check-up is often clear from the broader context.

Of course. In the past there were some doctors who made "house calls" and could give a patient a check-up at their home, but that's extremely rare if not nonexistent today.