OFA will release prelim results if you meet specific criteria (at least 12 months of age, permenant id, and you agree to release all results). This is from the OFA Application form:
OFA Policy Regarding Release Of Preliminary Results
(Animals Under 24 Months)
In an effort to encourage open sharing of health test results,the OFA will post preliminary results if:
-The animal is at least 12 months at the time of radiography
-The animal must be permanently identified via microchip or tattoo
-The owner initials the authorization block to release all results (including abnormal results) when the application is initially submitted