The reason for Pouncey missing practice Wednesday was listed as "non-injury."
The Palm Beach Post reported Wednesday that according to a source, Pouncey was in Massachusetts to testify before a grand jury in the case involving former Patriots tight end Aaron Hernandez, who has been charged with the June shooting of associate Odin Lloyd.
The team declined to say whether Pouncey was absent because of his grand jury subpoena related to the case. Pouncey and Hernandez were college teammates at the University of Florida before entering the pro ranks.
Pouncey was served with the subpoena following the Dolphins' previous game against the Patriots, which took place at New England on Oct. 27. Pouncey hadn't previously missed any practice time because of the subpoena, but he sat out two games in November with a gall bladder illness.
The Associated Press contributed to this report.