  We give predictions for the ratio RQ(x,Q2)=FLQ(x,Q2)/F2Q(x,Q2) at small
values of Bjorken variable x in the first three orders of perturbation theory.
We show an approximate x-independence of RQ(x,Q2) at low x and non-large Q2
values (Q2 < 8--10 m2Q), irrespectively on the gluon density in a proton used
in the calculations. This observation could be useful in subsequent
phenomenological studies of the heavy flavor production at future lepton-hadron
and hadron-hadron colliders.
