"prior to return" is correct and usable in written English.
It is most commonly used when you want to specify the time before something else is done. For example, "Please complete the survey prior to return."
Unless agreed to in advance, all loans are expected to be fully annotated prior to return.
These changes will take more time and effort than would be reasonable to expect prior to return to flight.
A minimum of 5 asymptomatic days and completion of the functional exercise protocol was required prior to return to unrestricted competition.
Deployment using natural Earth perturbations to indirectly achieve plane separations is analysed using a developed method and compared to deployment utilising the Earth Moon Lagrange point L1 as a staging area prior to return to LEO.
The functional filters were positioned in the slow circuit to ensure removal of cellular debris, DNA and endotoxin, and particles >0.6 um prior to return to animal (supplementary Figure 1).
For men, a 10 percentage point increase in predicted probability of return migration was associated with a 0.3 to 0.5% lower wage in the year prior to return.
Prior to returning to academia Garrick worked for 15+ years in the private sector.
Many adults are discharged to skilled nursing facilities (SNFs) prior to returning home from the hospital.
Following acute oxidant insult p21 was up-regulated prior to returning to initial levels.
Prior to returning to Stanford, he was an Academy Scholar at Harvard University.
Upon leaving Downstate, he established a presence in our sister organization, SUNY Stony Brook, prior to returning to Minnesota for retirement.
