tripling hcg levels

My sister just found out that she is expecting and had her hcg levels taken.  She was about 14 wks and her hcg levels were 352.  2 days later they were 971!!  Anyone else ever have their hcg levels triple and any suggestions on what it could mean?

[BMM]

I mean she was 4 wks with her first hcg level (I'm 14 wks...prego brain??)

[filbert143]

Mine tripled as well in the beginning - but I had just one...no multiples for me.  Everything turned out fine.  You shouldn't worry.

[chellybeans]

it could mean multiples. mine started out low then were doubling really fast. i am having twins. it was triplets, but i lost one.

[romme80]

Im 5 weeks and 1 day and I went in for blood work last week and my levels were Hcg levels were 590 on Friday afternoon and on Monday morning I had them done again and they were 2419! Mine multplied by 4!!! We are really excited, this is our first. We go to the doctor on June 7th so hopefully we know more than. I would LOVE to have twins!!!! Good Luck!