under 8 years old for girls is a bad sign, 8 is okay.
under 9 for boys is a bad sign.
just watch out for any 6 year old or something like that.
beware of that GnRH either centrally or some some other source.
-first aid 2019 pg 623
Precocious puberty signs and symptoms include development of the following before age 8 in girls and before age 9 in boys.
Breast growth and first period in girls
Enlarged testicles and penis, facial hair and deepening voice in boys
Pubic or underarm hair
Adult body odor