Glasgow head coach Hugh Campbell said: "A number of the guys have been suffering from sore throats and upset stomachs, so, to be fair to them, we're giving them as long as we possibly can to get over it."
A squad of 24 has been named.
Front row from: Stuart Corsar, Lee Harrison, Scott Lawson, Fergus Thomson, Kevin Tkachuk
Second row from: Tim Barker, Craig Hamilton, Dan Turner
Back row from: John Beattie, Paul Dearlove, Gregor Hayter, Steve Swindall, Andrew Wilson
Backs from: Scott Barrow, Graeme Beveridge, Andy Craig, Calvin Howarth, Rory Lamont, Graeme Morrison, Hefin O'Hare, Dan Parks, Sam Pinder, Mike Roberts, Colin Shaw