One source told Werder the symptoms Harvin was suffering from with his migraine headaches were less severe but the problem still lingers.
Harvin traveled with his teammates to New Orleans for the NFC Championship Game later Saturday, the (Minneapolis) Star Tribune reported.
He was listed as questionable on the official injury report but his availability to play remained undetermined.
Harvin, the AP's offensive rookie of the year, missed practice Thursday and was told by coach Brad Childress to remain home Friday. Childress said the missed practice time could not be made up and called the situation "less than ideal."
Harvin has 60 receptions for 790 yards and six touchdowns. He has also carried the ball 15 times for 135 yards and returned 42 kicks for 1,156 yards and two scores.
Vikings tackle Bryant McKinnie posted a video to his Twitter account of him interviewing Harvin while Harvin sat in front of his locker. McKinnie asked Harvin to tell everyone he had tried everything for his migraines, and Harvin replied "I've tried everything. Nothing works. I give up."
Information from ESPN NFL reporter Ed Werder was used in this report.