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Refer a Friend

A Few Simple Steps for You, Significant Contribution for Us

Get a $250 voucher 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.

Gift Card, as a token of our gratitude

Once they finish the study, we’ll contact you and send your gift card.

Refer a Friend Now

T&Cs apply

Terms and Conditions

If the eligibility steps below are met, we’ll send you your eGift Card 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. 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 enrollment must match the one provided by the referrer to validate the referral and qualify for the program.

You’ll have a choice from over 60 retailers to use this eGift Card, including some great options such as Amazon, Coles, Bunnings, eBay, Uber, Webjet, and more. You’ll be able to use this voucher across any of the retailers and spend as much as you want at each one – up to $250. See the full list here

Criteria for Referred Participants

  • 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: There is no limit to the number of different people you can refer, but the eGift Card is only payable for the first study your friend doses on (you do not receive an eGift Card for every study they take part in thereafter).

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