In a major boost for interim head coach Matt Sherratt’s side off the back of a rejuvenated performance against Ireland, Lake will join up with fellow teammates Jac Morgan, Gareth Thomas and Sam Parry.
Ben Warren and Dan Edwards who are unlikely to feature in the Murrayfield clash have been released back to the Swansea-based region before returning to training next week.
Lake, who captained Wales on tour to Australia last summer and throughout the Autumn Nations Series earlier this season but underwent bicep surgery in December.
His initial prognosis was up to 12 weeks on the sidelines after being injured in training but is ahead of schedule for the match with the Scots.
The 25-year-old, who has won 18 caps and is likely to be a major contender for the British and Irish Lions’ Australia tour availability takes Sherratt’s squad up to 38 players. He joins fellow hookers Elliot Dee, Evan Lloyd and Parry as options for the Cardiff boss.
Wales’ 27-18 loss to Grand Slam-chasing Ireland was their 15th successive Test defeat, but they looked a transformed team under Sherratt, who has temporarily taken the reins following Warren Gatland’s departure.
Scarlets pair Joe Roberts and Taine Plumtree and Cardiff scrum-half Ellis Bevan have also been released to their clubs for weekend fixtures but will report back for Wales duty on March 3.
Wales continue their Six Nations campaign by tackling Scotland at Murrayfield five days later, before hosting England on March 15.
[Lead image: Welsh Rugby Union]
