> You want to marry someone? Make sure the government approves for your safety.

Historically, many states in the US required blood tests of both partners prior to marriage. Mostly it was a test for syphilis, which was the main reason that 16th ^ 17th Century people used tons of makeup. Do not google what that disease looks like in the tertiary stage if you want to sleep at night.

https://en.wikipedia.org/wiki/Premarital_medical_examination