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Refer a Friend

A few simple steps for you, significant contribution for us.

Earn $250 for each successful referral

Share the referral with friends

To qualify, the referred participant must be new to Linear and cannot have applied for or participated in a study previously.


They should then apply for any study using the email address you provided. Please note that completing a study is a requirement.

Get rewarded

Receive your $250 reward once your referred friend successfully completes the study

Refer a Friend Now

Terms and Conditions

If the eligibility steps below are met, you will receive $250 deposited directly into your bank account. as soon as they get dosed on the study! You do NOT have to be a current/past participant or applicant to refer someone.

To participate in the program, referrers must fill out the Refer a Friend Form prior to the new participant applying for a study. This requirement ensures that individuals cannot claim referrals retroactively after participating in a study and then inquire about their friend’s voucher.

Referred friends must sign up for a study using the email address provided during the referral. The email address used for study enrolment must match the one provided by the referrer to validate the referral and qualify for the program.

Criteria for Referred Participants

  • To refer a new participant you must be 18 years of age or older. (18+) 
  • The new participant that has been referred to Linear must be dosed on a study (alternates or backups do not qualify).
  • And they must be a new applicant! They cannot have applied or participated in a study previously. 

Please Note: You can refer as many different people as you’d like, but the payment will only be applicable for the first study your friend participates in. Subsequent studies they participate in won’t result in additional payments.