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					Originally Posted by WV~Yorkies  Yes you have to Dna if they have more than 3 litters.  I didn't know this back in the summer until I got a letter.  It held my friends papers up for a while.  I am thinking it took 6-8 weeks to get the dna back.
 Weight is a hard thing to predict.  My puppies are 12 weeks and range from 2 1/2 to 2 3/4 I expect the biggest one to reach 5 1/2- 6 pounds.
 
 Do you realize there is no such thing as a teacup yorkie?
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  The AKC ruling is 3 times in a year or 7 in a lifetime..... 
However, it's the breeder's responsibility to get it done ASAP....DNA certification should take maybe a month to get back.  It shouldn't take months.....You order the kit from AKC via their website.  You get it at the most in a week, you swab the cheek, mail it back, at the most a month.  Once she has that in her hands, she sends in the litter registration......takes a couple of weeks to get that back. 
And your right, weight and size is one of the most difficult things to predict.  I've seen some get to 3 pounds at 8 weeks and maybe put another 1/2 pound that's it.  Then I have one that was 3 1/2 pounds until she was a year old, she's now 7 pounds at 8 years of age.  She just did a growth spurt.....