can someone please explain ranges?

Hi Guys,

Can someone please explain what hormone ranges are? Why they are different from person to person? and how they are determined from person to person?

i know that it’s the high and low end of where your hormone level should be but… would like a bit more info on them…

This question may sound dumb, but figured i’d ask anyways…

looked on google but couldn’t find much…

Thanks,
David