Christensen picked up an injury in Chelsea’s last Premier League game against Liverpool which forced him off.
The centre-back was then out for Chelsea’s midweek game against Grimsby Town in the League Cup.
But Chelsea are set to bring Christensen back into their starting line-up at the weekend, with Lampard confirming that Danish international will be able to play through the pain.
“Andreas, should be okay. A bit of pain but not a risk,” Lampard said.
Lampard does have some other injury concerns, with Chelsea still without a number of players.
Antonio Rudiger, Emerson and Ruben Loftus-Cheek all remain sidelined, but Olivier Giroud should return at the weekend.
“Rudiger, out. Toni has got a recurring injury in the groin, he still has some pain,” the Blues boss said.
“Olivier, yes he is over his illness. It left him pretty weak and he has got some strength.
“Emerson, other side of international break with hamstring.
“Ruben, no date but he is jogging outside.”
Chelsea go into their game tomorrow against Brighton & Hove Albion to pick up the three points.
Brighton have shown good ability in possession this season, but they have lacked ruthlessness in front of goal.
If Chelsea are able to win they could move up as high as third in the Premier League table, if other results go in their favour.
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