All you need to do is visit this link https://shop.personalabs.com/groupon
Find the test you purchased through Groupon and click the orange "Redeem Groupon" button
This will add your Groupon to the cart.
Click to checkout.
Type in your 8 digit Groupon code into the the redemption box and click apply
Click confirm order
Create a new account or login to your existing account if you have one.
Complete your order and print your lab order
Take your lab order with you when you visit the patient service center.