Whatever we do, there is no absolute guarantee of a healthy dog. But, to do the very best we can to give a lab pup a fair chance of health, parents should be health tested.
The very minimum tests which should be done are hips and elbows eyes.
Elbows and hips should both be scored and certified - that's done by a vet and recorded by the kennel club against the pedigree name. It's done to minimise the chances of joint disease in the puppies - a problem which has been very common in labs. The scores are shown for each hip and should be a total of 16 or less.
Eyes should also have an in date certificate (each cert lasts for a year and then needs renewing) for GPRA (eye disease which causes blindness usually by 3/4 years old)? The eye problem is purely genetic, so both parents should be tested to see if they carry the gene.
The breeder should send the pup home with you with a small supply of the food she's been feeding with a diet sheet telling you how often to feed and how much. The puppy must always have access to a bowl of fresh water.
Whole milk is difficult for dogs to digest; if they are supplementing their diet, they should be using puppy formula. Not dairy.
Do you have copies of their pedigrees? Will the pups be registered? Are the parents related?
Your puppy will need a cosy bed, a couple of soft toys and something like a puppy kong or nylabone. It will be too young for bones or tough chews for a few weeks yet.
She is a real baby and needs treating like one. She won't be too good at regulating her own temperature either.
She will need to be carried out and about as much as you possibly can so she sees all of life before she gets to about 16 weeks old. Fire engines, school playgrounds, men in helmets, men in hats, motorbikes, wheelchairs, crutches, walking sticks. Everything you can think of.
Whatever you do, dont keep her at home all the time. She needs to be socialised as much as you possibly can so she becomes a confident, happy adult.
She will need 2 jabs, 2 weeks apart and once the 4 week period has passed, she should be out and about on a light lead for 10/15 minutes a day.
You'll need lots of kitchen roll, many poo bags and some rubber gloves. Some disinfectant and some biological washing powder too.
I recommend that you carefully read the stickies on www.labradorforums.co.uk in the puppy thread. There is a lot of very valuable advice there.