Reynolds was limited at Thursday's practice due to a thigh issue.
Reynolds is making a sudden appearance on the Lions' Week 15 injury report, which occasionally implies a health concern picked up during the week and potentially even on the practice field. Friday's report could clear up his status in advance of Sunday's game against the Cardinals. Since getting blanked on three targets in his debut with Detroit in Week 11, Reynolds has gathered in 10 of 17 targets for 191 yards and one touchdown over the last three contests.