Referral Program

Current testers refer your friends and family to P&K Research.


Refer a friend and get compensated for each person referred. All you need to do is complete the referral form and we’ll contact your friends. Once your friend participates in a study, you will receive a check for $10. Want to earn even more money? EARN AN ADDITIONAL $10 FOR REFERRING A MALE FRIEND AGES 18-39. Download the referral form by clicking the button below. Referral forms are also available at each P&K location. 

REMEMBER-The more friends and family members you refer, the more referral money you'll collect.

It's Easy!

Refer friends & family and earn cash instantly!

  • Share the great benefits of being a P&K tester with your friends and give them a referral form.
  • Then your friend can register online at or call 800-281-3155.
  • When your friend participates in their first study as a thank you for your referral, you will be mailed a check.


Let us do the work for you. Send us a list of your friend's names and phone numbers to (remember to include your name in the email) and we will do the rest.

For more information about the referral program call 800-281-3155 or email


  • Every tester is eligible. You can start telling your friends and sending your referrals to us as soon as you become a tester.
  • Referral checks are mailed monthly. For the referral check schedule, email a request to
  • Referral forms must be presented at the time of the study. No late referral forms will be accepted.
  • An additional $10 will only apply when a referred friend is Male and between 18-39 years old.
  • Ensure your contact information is correct on the referral forms.
  • The address on the referral form will be the address we use to mail checks and your account will be updated with that address.
  • All referral forms must be complete and legible.
  • We reserve the right to deny any referral payment.