Scotland lock Jonny Gray will have a scan at Spire Murrayfield Hospital today having suffered a pectoral strain.
Gray, playing alongside his brother Richie, impressed in Sunday's win over France at Murrayfield.
The Scotland medical team provided the following squad update, having reviewed the players from Sundays 29-18 win.
Fly-half Finn Russell sustained a concussion early in the match and was immediately removed from the field of play. He is now subject to the compulsory, graduated return-to-play protocol.
A number of other players require ongoing assessment and treatment to ensure they are fit to face Ireland in Dublin this Saturday.